Purple Passion Danio are native to the streams and rivers of Myanmar and Thailand, and they are popular among aquarium enthusiasts for their striking coloration and hardy nature.
With their shimmering purple and silver scales and slightly curved spine, these cuties are a unique addition to any tank.
In this guide, I’ll show you everything you need to know to keep your Purple Passion Danios happy and thriving, from tank setup to feeding and breeding.
So, let’s dive in and explore the world of these fascinating fish together!
Purple Passion Danio Summary
|Common Names||Purple Passion Danio, Rosy Danio, Danio Roseus|
|Scientific Name||The Danio roseus|
|Origin||Mekong River drainage in China, Thailand. Laos, and Myanmar|
|Habitat||Clear, slow-moving waters with dense vegetation, submerged roots, and sandy or gravelly substrates|
|Color||Bright pink body with purple fins and scales|
|Size||Up to 1 inch (2.5 cm)|
|Lifespan||3 to 5 years|
|pH Level||6.5 to 7.5|
|Water Temperature||72 to 78 degrees Fahrenheit (22 to 26 degrees Celsius)|
|Water Hardness||5 to 12 dGH|
|Minimum Tank Size||10 gallons (38 liters)|
|Community Tank||Yes, peaceful and active fish are suitable for community tanks with other small, non-aggressive fish species.|
|Compatibility||Compatible with other peaceful fish species, but should not be kept with larger, aggressive fish species that may view them as prey. Male Purple Passion Danios may display brief territorial behavior during breeding, so it is essential to provide hiding spots and visual barriers.|
Purple Passion Danio History
Purple Passion Danio, Danio Roseus, or Rosy Danio, is a relatively new fish species in the aquarium hobby.
Its history began in 2008 when scientists first discovered it in the Mekong River drainage in China, Thailand. Laos, and Myanmar.
They initially described the fish as a new species and named it Danio Roseus due to its bright pink coloration.
In the following years, the fish gained popularity among fishkeepers and they exported it to different countries, including the United States.
Since then it was further developed through selective breeding to enhance its coloration and hardiness.
The fish’s name was eventually changed to Purple Passion Danio due to the purple hue that developed in its fins and scales through selective breeding.
Today, Purple Passion Danios are widely available in the aquarium trade and continue to be a popular choice among fishkeepers due to their stunning appearance and easy care requirements.
However, it is important to note that the fish is still relatively new to the hobby, and researchers, as well as experienced fishkeepers, are still studying its long-term behavior and care requirements.
Purple Passion Danio Origin & Habitat
Purple Passion Danios are native to the small streams and tributaries of the Mekong River drainage in China, and Thailand. Laos, and Myanmar.
These rivers are famous for their rich biodiversity and support a variety of aquatic life, including several fish species.
In their natural habitat, you can fit these danios dwelling in clear, slow-moving waters with dense vegetation, submerged roots, and sandy or gravelly substrates.
The streams and tributaries they inhabit are often shaded by overhanging trees and shrubs, providing shelter and cover from predators.
The water temperature in these habitats ranges from 72 to 78 degrees Fahrenheit (22 to 26 degrees Celsius), with a pH range between 6.5 and 7.5.
Purple Passion Danios feed on small insects, crustaceans, and zooplankton in their natural habitat where they also serve as a vital food source for larger fish species and birds due to their small size.
Purple Passion Danio Behavior
Purple Passion Danios are peaceful and active fish that exhibit natural shoaling behavior.
In the wild, they dwell in schools, and they display this behavior when they are in groups of at least six individuals in an aquarium.
But they may still display territorial behavior during breeding.
This is because males may chase females and each other during courtship, but this behavior is usually brief and does not result in significant aggression toward other tank mates.
When it comes to feeding habits, they are not picky eaters and will consume a variety of foods, including flakes, pellets, frozen or live foods, and even vegetable matter.
These naughty guys are also known for their jumping behavior, and it is common for them to jump out of an open tank.
What Are the Features of Purple Passion Danio?
Purple Passion Danios have a slender, torpedo-like body shape that is typical of the Danio genus.
Their body is elongated and streamlined, making them fast and active swimmers.
They also have a forked tail fin, which helps them maneuver through the water with ease.
Their dorsal fin is elongated and runs along the back of the fish, adding to their streamlined appearance.
But the most notable characteristic of these guys is their bright pink body coloration, which is particularly vibrant in females.
The coloration intensifies during breeding, and the males develop a deeper pink hue.
Their fins and scales take on a striking purple coloration, which is the result of selective breeding.
The purple coloration is particularly prominent in the dorsal and anal fins and along the edges of their scales.
In addition to their striking coloration, they have a dark stripe that runs horizontally along their body from the tip of their nose to the base of their tail fin.
This stripe is black or dark brown in color and contrasts with their bright body coloration.
Actually, some people think that the stripe provides some camouflage for the fish in the wild by breaking up their silhouettes and helping them blend into their surroundings.
2. Body Size
Purple Passion Danios can only reach a maximum length of about 1 inch (2.5 cm), but they make up for it with their big personality.
They are active, playful, and social fish that love to be in schools of at least 6 individuals, where they can show off their natural shoaling behavior.
Purple Passion Danio Lifespan
These little guys can live for about 3 to 5 years in captivity, which isn’t too shabby for a fish.
Of course, with proper care, some individuals may live longer and be with you for a few extra years.
So, if you’re up for the challenge, all you need is to provide your Purple Passion Danios with a healthy diet, clean water, and lots of love!
Purple Passion Danio Life Cycle
1. Egg Stage
During this stage, the female danios release their eggs, which then the male fertilize.
These eggs are typically adhesive and will attach to plants or other objects in the aquarium.
The incubation period for the eggs is around 36 to 48 hours, during which time they develop into embryos.
But note that not all of the eggs will hatch successfully. This can be due to various factors such as water quality, temperature, and genetics.
For example, if the water temperature is too low or too high, the eggs may go bad and won’t hatch.
Similarly, if the water quality is poor, the embryos may not develop properly, leading to unsuccessful hatching.
In some cases, genetics can also play a role in the viability of the eggs.
If the female danio has any genetic abnormalities, it can lead to a higher rate of unsuccessful hatchings.
This is why it’s essential to select healthy and genetically diverse breeding stock when breeding Purple Passion Danios.
2. Larval Stage
Now, the newly hatched larvae emerge from the eggs.
At this point, the Purple Passion Danio larvae are incredibly small and fragile, measuring just a few millimeters in length.
They are also transparent, which allows you to see their internal organs.
The larvae in this stage will also rely on their yolk sac which contains all the necessary nutrients for the larvae to develop and grow.
This yolk sac will gradually shrink as the larvae continue to mature and consume its contents.
3. Fry Stage
At this point, the fry emerge from the larval stage and start to swim and feed on their own.
But the fry are still relatively small, usually measuring less than an inch in length. This is also the stage where the fry will start to develop their distinctive purple coloration.
This stage can last for several weeks, during which time the fish will continue to grow and develop. As the fish grow, their purple coloration will become more prominent.
4. Juvenile Stage
The Purple Passion Danio fry will now start to resemble adult fish, but they are still smaller and less vibrant in color than their adult counterparts.
The juvenile stage can last for several months, during which time the fish will continue to grow and develop.
The fish will continue to develop, and their purple coloration will deepen, becoming more vibrant and prominent as they mature.
5. Adult Stage
At this stage, the Purple Passion Danio will have reached its full size and will have developed its distinctive purple coloration.
The fish are now fully mature and ready to breed, continuing the cycle of life.
They will start to display breeding behavior so you should provide the fish with a suitable breeding environment and monitor them closely for any signs of stress or disease.
The breeding environment should include plants or other objects for the female to lay its eggs, and you need to maintain the water temperature at around 75°F.
You should also monitor the fish closely for any signs of disease or illness. Common issues that can arise include bacterial or fungal infections, parasites, and swim bladder disorders.
If you notice any signs of illness, you should take the necessary steps including quarantining affected fish and treating the aquarium appropriately.
Is Purple Passion Danio Hardy?
The Purple Passion Danio are very hardy fish.
I can think of these guys as the superhero of the fish world – tough, resilient, and able to handle whatever life throws at it.
These little guys can tolerate a range of water conditions, making them perfect for those of us who aren’t exactly fish experts.
But don’t let their hardiness fool you – they still need proper care and attention to thrive, just like any other fish.
How to Care for Purple Passion Danio?
1. Water Quality
Purple Passion Danios are robust boys that can adapt to a wide range of water conditions.
However, it’s still important to maintain good water quality to prevent health issues from arising.
These are toxic compounds that can accumulate due to fish waste, uneaten food, and other organic matter.
Ammonia is produced by fish waste and decomposing organic matter, and high levels can cause lethargy, loss of appetite, and difficulty breathing in fish. In severe cases, it can even be fatal
Nitrite is produced when beneficial bacteria break down ammonia in the aquarium, and high levels can be harmful to fish.
For example, high levels of nitrite can lead to a brown blood disease in fish, which is caused by the binding of nitrite to hemoglobin, preventing the transport of oxygen to the fish’s tissues.
This can result in lethargy, loss of appetite, and even death.
In addition to monitoring ammonia and nitrite levels, it’s also important to keep an eye on nitrate levels.
While less toxic than ammonia and nitrite, high levels of nitrate can still be harmful to fish.
For example, high levels of nitrate can stress your fish and more susceptible to diseases like fin rot or ich.
It can also lead to algae growth and poor water clarity, which can be unsightly and make it difficult to see your fish.
To avoid all these water quality issues, you can perform regular water changes and have a good filtration system in place.
A general rule of thumb is to change out 10-20% of the water in your tank every week to help remove excess waste and keep ammonia, nitrite, and nitrate levels in check.
When you perform water changes, be sure to use a dechlorinator to neutralize any chlorine or chloramines in your tap water.
These chemicals can be harmful to your fish, so it’s important to remove them before adding the new water to your tank.
It’s also important to avoid overfeeding your fish and to remove any uneaten food from the tank after feeding.
This can help prevent excess waste and organic matter from accumulating in the water.
Another way to maintain good water quality is to test your water regularly using a reliable test kit. This can help you keep track of levels and make adjustments as you need.
For ammonia and nitrite, levels should ideally be at or near zero, while nitrate levels should be kept below 40 ppm.
In addition, you can install an aquarium filter to remove debris and harmful compounds from the water, while also providing beneficial bacteria to help break down waste.
2. Water Temperature
These fish are adaptable to a range of temperatures 72-78°F (22-26°C), but sudden changes or fluctuations in temperature can cause stress, which may lead to health problems.
For instance, if the water temperature drops too low, your fish may become lethargic and lose their appetite.
On the other hand, if the water temperature is too high, your fish may start to gasp for air at the surface of the water.
This is because warmer water holds less oxygen, which can make it difficult for fish to breathe.
To avoid these issues, you can control the water temperature by using an aquarium heater with a built-in thermostat.
You should also consider the effects of external factors on the water temperature.
For example, placing your aquarium near a window or heating vent can cause the water temperature to fluctuate due to changes in ambient temperature.
Similarly, changes in room temperature caused by air conditioning or heating systems can affect the water temperature.
So, choose an appropriate location for your aquarium and avoid placing it in areas where the water temperature may be affected by external factors.
3. pH Level
The pH level refers to the level of acidity or alkalinity in the water and can have a significant impact on your fish’s ability to maintain proper bodily functions and resist diseases.
In the case of Purple Passion Danios, they thrive in a pH range between 6.5-7.5.
If the pH level in the tank falls below or over this range, your fish may experience a variety of health issues.
For example, if the pH level becomes too low, your fish may experience respiratory distress, loss of appetite, and difficulty maintaining proper electrolyte balance.
On the other hand, if the pH level becomes too high, your fish may experience skin irritation, fin damage, and difficulty maintaining proper metabolism.
High pH levels can also lead to the formation of mineral deposits and increased toxicity levels in the water, which can harm your fish’s health and overall well-being.
You should also note that external factors can also affect the pH level in the tank.
For example, driftwood or certain types of rocks can release substances that lower the pH level, while crushed coral or limestone can raise the pH level.
To avoid these issues, you can use the API pH test kit to regularly monitor the pH level in your aquarium.
If the pH level falls outside the ideal range, you can make adjustments by adding chemicals to the water or by using special substrates like crushed coral to raise the pH level, or driftwood or peat moss to lower the pH level.
It’s important to make these adjustments gradually to avoid shocking your fish with sudden changes in water chemistry.
4. Water Hardness
Water hardness refers to the level of dissolved minerals, primarily calcium and magnesium, in the water.
These minerals can affect the overall health and well-being of your Purple Passion Danios.
In general, danios prefer a moderate water hardness level between 5-12 dGH (degree of general hardness) and 2-8 KH (carbonate hardness).
If the water hardness is too low, it can affect the growth and development of your fish, as well as cause difficulties with maintaining proper electrolyte balance.
On the other hand, if the water hardness is too high, it can lead to the formation of mineral deposits and harm your fish’s overall health.
External factors can also affect the water hardness level in the tank. For example, using tap water can introduce minerals into the tank, and different types of rocks and substrates can also have an impact.
To maintain the proper water hardness level for your Purple Passion Danios, you can use a water hardness test kit to monitor the levels and adjust as necessary.
Additionally, you can use water conditioners or specific substrates to help maintain the desired water hardness level.
It’s important to note that sudden changes in water hardness can stress your fish so you need to do gradual changes, over a period of several days or weeks.
1. Tank Size
The tank size is an important factor to consider when keeping any fish species, including the Purple Passion Danio.
These fish are relatively small and active, but they still require adequate space to swim and play.
A tank that is too small can lead to several issues, such as poor water quality due to high fish waste and uneaten food levels, stunted growth, and aggression between tank mates.
So, the ideal tank size for a small school of these buddies is at least 10 gallons, with an additional 5 gallons per additional school of fish or for other tank mates.
But also keep in mind that the more fish and decorations you have in the tank, the more space they will need.
When choosing a tank, you should also consider the material and quality of the tank.
Glass tanks are a popular choice due to their durability and ease of cleaning, but acrylic tanks can be a good alternative as they are lightweight and less prone to breakage.
Decorations are an essential aspect of creating a healthy and engaging environment for your Purple Passion Danios.
There are various types of decorations to choose from, including natural substrates, rocks, plants, and artificial ornaments.
Natural substrates, such as sand or gravel, can provide a natural look to the aquarium while also creating a comfortable environment for the fish to swim and rest.
Rocks, driftwood, and other natural elements can also create hiding places and territories for your fish, which can reduce stress and improve overall well-being.
When it comes to living plants, they can serve as additional hiding places, as well as improve water quality by absorbing nitrates and producing oxygen.
They can also add aesthetic value to the aquarium, and create a more naturalistic environment for your fish.
Artificial ornaments, such as plastic plants, ceramic caves, or pirate ships, can create an aesthetically pleasing environment, while also providing hiding places and territorial boundaries for your fish.
However, it’s essential to ensure that any decorations you use are safe for your fish and won’t harm them in any way.
When choosing decorations for your aquarium, you need to consider the size of your tank and the activity level of your danios.
Too many decorations or overly complex arrangements can reduce swimming space and lead to stress, while few decorations can create a boring and sterile environment.
It’s also crucial to maintain good hygiene in your aquarium, including regularly cleaning and replacing decorations, to prevent the build-up of harmful bacteria and other pathogens.
Lighting is an essential aspect of keeping a healthy aquarium, as it provides the light energy necessary for photosynthesis in plants and helps regulate the day-night cycle for your fish.
When you select lighting for your Purple Passion Danio tank, think of the type of live plants and Danios yank mates you have.
Some plants require higher levels of light than others, while some fish may be sensitive to bright light.
You should also consider the intensity and duration of light, as too much or too little can have negative effects on your tank’s inhabitants.
Fluorescent tubes and LED lights are two popular types of lighting for aquariums.
But I actually prefer using LED lights as they are more energy-efficient and have a longer lifespan despite their expensive price.
In addition to choosing the right type of lighting, you need to consider the duration and timing of light exposure.
Most fish and plants require a regular day-night cycle, so you should provide a consistent lighting schedule.
A common schedule is to have the lights on for 8-10 hours a day and off for the remaining 14-16 hours.
4. Tank Lid
A tank lid is an important accessory for any aquarium, especially if you’re housing active jumpers like Purple Passion Danios.
A lid can also provide other several benefits, such as keeping debris and dust out of the water and reducing water evaporation.
When you choose the tank lid, ensure to choose one that fits securely and snugly on top of the tank to prevent any gaps or openings.
This will ensure that the lid effectively prevents fish from jumping out and debris from entering the tank.
You can find tank lids in a variety of materials, such as glass, acrylic, and mesh, each with its own advantages and disadvantages.
Purple Passion Danio Compatibility
The Purple Passion Danio is a peaceful and social fish that can coexist with a variety of other fish species in the aquarium.
However, you should still consider their size and activity level when choosing tank mates.
For instance, you should avoid larger or more aggressive fish that could harm or intimidate your fish.
Instead, choose peaceful fish of similar size and temperament, such as other small schooling fish or peaceful bottom dwellers.
Here is a table of potential good and bad tank mates for the Purple Passion Danio:
|Good Tank Mates||Bad Tank Mates|
Purple Passion Danio Feeding & Diet
In the wild, the Purple Passion Danio is an omnivorous fish that feeds on small insects, crustaceans, and plant matter.
They are opportunistic feeders that eat whatever is available in their natural habitat.
But their diet can vary depending on the season and availability of food sources.
In captivity, you can feed them a balanced diet consisting of commercial fish food and occasional treats of live or frozen foods.
Some foods that you can include in their diet are:
- Freeze-dried foods
- Brine shrimp
I actually give them live foods as a treat to mimic their natural diet in the wild.
But when you feed them live foods, ensure they are of high quality and from a reputable source to avoid introducing disease or parasites into the aquarium.
When it comes to the feeding frequency, you should offer them small meals throughout the day rather than one large feeding with what they can eat within 2-3 minutes per feeding.
Purple Passion Danio Breeding
Step 1: Set up the Breeding Tank
Setting up the breeding tank is crucial for the successful breeding of Purple Passion Danios. Here are the necessary steps you need to take:
- Choose a tank that is at least 10 gallons in size
- Ensure that the tank is clean and free of any debris or harmful bacteria
- Add a sponge filter to the tank for gentle filtration
- Add some plants to the tank, such as java moss or java fern, to provide hiding places for the fish
- Maintain a consistent temperature in the breeding tank between 74-80°F using a heater and thermometer
- Perform regular water changes to keep the water clean and free of harmful chemicals
- Use a water conditioner to remove chlorine and other impurities from the tap water
Step 2: Choose the Breeding Pair
You should look for a healthy and active mature male and female pair. The male will typically be larger and more colorful than the female.
You should also ensure that the fish are free from any diseases or infections, as these can be passed on to their offspring.
It is a good idea to observe the behavior of the fish before choosing a breeding pair.
Look for fish that are active and show an interest in each other. For example, males will often chase females around the tank, trying to entice them to spawn.
But make sure to avoid pairing aggressive fish together, as this can lead to fights and injuries.
Step 3: Condition the Breeding Pair
Before breeding your Purple Passion Danios, it is important to condition the breeding pair to ensure that they are healthy and ready to spawn.
Conditioning involves feeding the fish a varied diet of live and frozen foods to improve their health and reproductive capacity.
The first step in conditioning the breeding pair is to increase the amount and frequency of their feedings.
You can start by feeding them small amounts of live or frozen foods, such as brine shrimp or bloodworms, several times a day.
In addition to feeding the fish, you should gradually increase the temperature of the tank to around 78-80°F. This will simulate the natural conditions that trigger breeding behavior in the fish.
Step 4: Introduce the Breeding Pair
Once you have conditioned your breeding pair of Purple Passion Danios, it is time to introduce them to the breeding tank.
To introduce the breeding pair, turn off the lights in the breeding tank and dim the room lights.
This will reduce stress on the fish and encourage them to spawn. Once the lights are off, place the male and female in the breeding tank together.
The male will typically begin to chase the female around the tank, trying to entice her to lay eggs.
If the female is receptive, it will release a few eggs, which the male will fertilize. The eggs will then stick to the plants in the tank.
But you should still monitor the behavior of the fish during the spawning process. If the male becomes too aggressive, you should remove him from the tank to prevent it from injuring the female.
Step 5: Remove the Adult Fish
After the spawning process is complete, you should remove the adult fish from the breeding tank.
This is because adult fish can sometimes eat their eggs or fry, which can hinder the survival of the offspring.
To remove the adult fish, you can use a small net or a trap. It is important to handle the fish gently and avoid stressing them during this process.
When you remove the adult fish, separate the male and female if they are still together.
Males can become aggressive towards females after spawning, which can lead to injuries or fatalities.
Step 6: Hatching and Raising the Fry
Within 24-36 hours, they will hatch into fry.
At this stage, the fry will still be attached to their yolk sacs and will not be able to swim.
Once the yolk sacs are fully absorbed, the fry will become free-swimming after a few more days.
At this point, you should feed them small amounts of infusoria or powdered fry food.
You can easily obtain Infusoria by adding some plant matter or fish food to a container of water and allowing it to sit for a few days.
As the fry grow, you can gradually introduce larger foods, such as baby brine shrimp or microworms.
It is important to feed the fry small amounts of food several times a day, rather than one large feeding, to prevent overfeeding and poor water quality.
It is also important to perform frequent water changes and monitor the temperature, pH, and ammonia levels.
It may take several months for the fry to reach adulthood, depending on their growth rate and the conditions in which they are raised.
During this time, it is important to continue to provide them with proper care and nutrition to ensure their healthy development.
Purple Passion Danio Common Diseases
Like all fish species, the Purple Passion Danio is susceptible to various diseases that can affect their health and well-being.
Here are some of the common diseases that can affect the Purple Passion Danio:
|Ich||Parasitic infection caused by the protozoan Ichthyophthirius multifiliis||White spots on the body, flashing or rubbing against objects, respiratory distress, lethargy||Medication (e.g. copper sulfate, formalin, malachite green), isolating infected fish, improving water quality||Quarantine new fish, maintain good water quality, and avoid overfeeding|
|Fin Rot||Bacterial infection, typically caused by Aeromonas, Pseudomonas, or Vibrio species||Fins and tail deteriorating, ragged or discolored fins, loss of appetite, lethargy||Medication (e.g. antibiotics, antifungal medication), improve water quality, isolate infected fish||Maintain good water quality, avoid overfeeding, avoid overcrowding|
|Dropsy||Bacterial infection, typically caused by Aeromonas or Pseudomonas species||Abdomen swelling, scales protruding, loss of appetite, lethargy||Isolate infected fish to prevent spread, medication (e.g. antibiotics, Epsom salt baths), improve water quality||Maintain good water quality, avoid overfeeding, avoid overcrowding|
|Velvet Disease||Parasitic infection caused by the dinoflagellate Piscinoodinim pillulare||Gold or rust-colored coating on body, rapid breathing, lethargy||Medication (e.g. copper sulfate, formalin, malachite green), isolating infected fish, improving water quality||Quarantine new fish, maintain good water quality, and avoid overfeeding|
|Swim Bladder Disease||Caused by various factors including bacterial infection, overfeeding, or injury||Difficulty swimming or staying upright, floating upside down, loss of appetite||Improve water quality, adjust diet, medication (e.g. antibiotics)||Maintain good water quality, avoid overfeeding, avoid overcrowding|
What Is the Smallest Danio Fish?
The smallest Danio fish is the Celestial Pearl Danio, also known as the Galaxy Rasbora.
How Big Do Danio Fish Get?
Danio fish such as the Giant Danio can grow up to 4 inches (10 centimeters) in length, while smaller species like the Zebra Danio typically only grow to around 2 inches (5 centimeters) in length.
Are Danio Fish Peaceful?
Danio fish are peaceful and can coexist with a variety of other fish species in the aquarium.
However, like all fish, they may become territorial during breeding season or if they feel threatened.
How Many Types of Danios Are There?
There are over 30 species of Danios, each with its own unique characteristics and appearances.
Some common species of danios include the Zebra Danio, Leopard Danio, Giant Danio, and Celestial Pearl Danio, among many others.
As promised, we have covered everything you need to know to keep your Purple Passion Danios healthy and happy in your aquarium.
From setting up the perfect tank to hatching and raising fry, we hope this ultimate care guide has provided you with valuable information and insights into these fascinating fish.
Just remember to provide your danios with a varied and nutritious diet, maintain optimal water conditions, and provide them with plenty of hiding places and decorations.
Do you still have questions? If so, leave a comment and I’ll be happy to answer them.