Panda Cory Care Guide (Hoplisoma panda): Tank Setup, Diet & Breeding
Quick answer: Panda Corys are small, peaceful, social bottom-dwelling catfish from the upper Amazon basin. The species long known in the aquarium hobby as Corydoras panda is now placed in the genus Hoplisoma, so the current scientific name is Hoplisoma panda. Keep them in a group of at least six, provide clean water, a soft substrate and a cooler tropical temperature range around 22-25°C (72-77°F). They are omnivores that need their own sinking foods, not just leftovers. They are also one of the easier Corydoradinae to breed, and in a mature planted aquarium some fry may survive even without a dedicated breeding tank.
Taxonomy Update: Corydoras panda Is Now Hoplisoma panda
A major phylogenomic revision of the Corydoradinae published in 2024 resurrected several older genera, including Hoplisoma. As a result, the Panda Cory long known as Corydoras panda is now treated as Hoplisoma panda (Nijssen & Isbrücker, 1971). Eschmeyer’s Catalog of Fishes currently lists Hoplisoma panda as the valid name.
That name has been used in the aquarium hobby for decades and remains the term most fishkeepers recognize and search for. Throughout this guide, “Panda Cory” refers to the same species now classified as Hoplisoma panda.
Panda Corys in the Wild
Panda Corys come from the upper Amazon basin. The type locality is Aquas Amarillas, a tributary of the Río Pachitea in the Río Ucayali system of Peru. Current catalogues also record the species from Peru and Ecuador.
Their natural waters are associated with the Andean foothill region and can be cooler than many aquarists expect from a “tropical” South American fish. This helps explain why Panda Corys do not require the high temperatures often used for discus or some other warm-water community fish. FishBase gives a broad environmental range of 20-25°C, while specialist aquarium references commonly recommend about 22-25°C for routine captive care.
Panda Cory Tank Size and Group Size
Panda Corys are social fish and should not be kept alone. A group of at least six is a sensible minimum; where floor space and filtration allow, a larger group is even better. In a group they are generally bolder, more active and more likely to show natural social behavior.
| Question | Practical recommendation |
|---|---|
| Minimum group | 6 Panda Corys |
| Comfortable group | 8-10 or more if the aquarium has enough floor area |
| Small-group tank base | Around 45 × 30 cm is a practical minimum |
| Better long-term target | 60 × 30 cm or larger gives a group more usable bottom area |
For bottom-dwelling fish, floor space matters more than aquarium height. A long, wide aquarium provides more feeding area, more room to forage and more places for individuals to rest without crowding one another.
Temperature and Water Parameters
| Parameter | Practical range |
|---|---|
| Temperature | 22-25°C (72-77°F) for routine long-term care |
| pH | About 6.0-7.5 |
| Hardness | Soft to moderately hard water |
| Ammonia / nitrite | 0 |
Clean, stable water matters more than chasing an exact number. Panda Corys are sensitive to deteriorating substrate and water quality, so regular partial water changes, good biological filtration and sensible stocking are important.
Corydoradinae are facultative air-breathers. They possess a modified intestine that can absorb atmospheric oxygen, so an occasional dash to the surface and gulp of air is normal. If every fish begins doing it repeatedly or much more often than usual, check oxygenation, temperature and water quality.
Substrate, Decoration, Plants and a Safety Lesson from Our Aquarium
A fine sandy substrate is ideal because Panda Corys spend much of their time searching the bottom with their barbels. Smooth, rounded fine gravel can also work, but avoid sharp material and keep the substrate clean. Dirty, organic-rich substrate can damage barbels just as effectively as rough gravel.
Driftwood, stones, caves and plants can provide shade and shelter. Plants are not necessary to keep the species successfully, but in a community aquarium they create useful cover for adults and especially for fry.
I once found that Panda Corys could wedge themselves into very strong, dense Anubias growth and become trapped. If a fish remained stuck and unable to move normally, the barbels could begin to deteriorate. After I freed the fish, the damaged barbels grew back. From then on I regularly checked dense plant clumps to make sure no Panda Cory had become trapped.
This is a personal husbandry observation rather than a general rule that Anubias is dangerous. The practical lesson is simply to inspect very dense or rigid planting and make sure small bottom-dwelling fish can move through it freely.
What Do Panda Corys Eat?
Panda Corys are omnivorous bottom-feeders. They should never be treated as living vacuum cleaners that survive on whatever other fish fail to eat. Give them food specifically intended to reach the bottom.
| Food | How to use it |
|---|---|
| Sinking tablets, pellets and granules | Reliable staple foods |
| Artemia / brine shrimp | Excellent live or frozen variety |
| Daphnia | Useful live or frozen food |
| Bloodworms / mosquito larvae | Useful variety and conditioning food |
| Microworms | Especially useful for small juveniles and fry |
| Food scraps from other fish | They will eat suitable leftovers, but leftovers must not be their entire diet |
Adult Panda Corys are not useful algae eaters. They may investigate biofilm and tiny edible material on surfaces, but they should not be purchased to control algae. They also do not eat fish feces.
Feed small portions once or twice daily according to stocking and body condition. In a community aquarium, watch the bottom after feeding to make sure faster mid-water fish have not eaten everything before the Corys receive their share.
Behavior and Tank Mates
Panda Corys are peaceful community fish. The most important compatibility questions are not aggression from the Corys themselves, but whether the other species are too aggressive, whether they compete excessively for food, and whether the chosen temperature suits everybody.
I successfully kept and bred Panda Corys in community aquariums rather than only in dedicated species tanks. My Panda Corys lived and reproduced alongside fish including angelfish, Yoyo loaches, Bettas and other community species. Breeding was regular enough that I sometimes had more young Panda Corys than I needed and could pass juveniles on to an aquarium shop.
This is first-hand experience, not a claim that every individual fish or every aquarium will behave the same way. Tank size, temperature, hiding places, feeding, individual temperament and the age of the fish all matter. The key point is that Panda Corys do not always require a sterile dedicated breeding setup in order to reproduce successfully.
Other suitable companions can include peaceful tetras, rasboras, smaller danios, gentle labyrinth fish, peaceful dwarf cichlids and other non-aggressive bottom-dwellers with overlapping requirements. Avoid very large or aggressive fish and avoid combinations that force Panda Corys to live permanently above their preferred temperature range.
Male vs. Female Panda Cory
Sexing mature Panda Corys is easiest when viewed from above. Females are usually larger-bodied, broader across the abdomen and noticeably rounder when full of eggs. Males tend to be slimmer and more streamlined.
- Females: broader body, fuller abdomen, often slightly larger.
- Males: slimmer body and more streamlined appearance.
Behavior can also help during spawning periods because males actively pursue receptive females.
How to Breed Panda Corys
Panda Corys can be very willing breeders once they are mature and well conditioned. Dedicated breeding tanks make egg collection and fry survival easier, but they are not always necessary. In my own planted community aquariums, Panda Corys spawned repeatedly and enough fry survived that reproduction became routine rather than exceptional.
Conditioning and spawning triggers
- Feed a varied diet including good sinking foods and live or frozen foods.
- Keep the fish in a healthy group with mature males and females.
- Large partial water changes with slightly cooler water can stimulate spawning.
- Good oxygenation and fresh water help reproduce the seasonal conditions that often trigger Corydoradinae breeding.
A ratio around two males to one female can work well when deliberately breeding them, although spawning can also occur naturally in a mixed group.
The characteristic “T-position”
During spawning, Corydoradinae use the well-known T-position: the female positions her head near the male while the pair briefly form a T-shaped posture. The female then carries one or a few adhesive eggs between her pelvic fins before selecting a surface and attaching them. The process is repeated many times during a spawning event.
Eggs may be placed on aquarium glass, plant leaves, filter housings and other smooth surfaces. In a dedicated setup, keepers often move the eggs to a separate hatching container. In a mature planted community tank, some eggs and fry can also survive naturally if there is enough cover.
I did not need to remove every adult fish or treat every spawn as a laboratory exercise. Panda Corys bred successfully in community tanks. Some eggs and fry were undoubtedly lost to other fish, but enough juveniles survived among plants and cover that the population still increased steadily.
Panda Cory Eggs and Fry
Depending on temperature, Panda Cory eggs typically hatch after several days. Newly hatched fry first use the yolk sac and do not need immediate external feeding. Once the yolk sac is absorbed, tiny live foods become very useful.
Good first foods
- Microworms
- Newly hatched Artemia nauplii
- Very fine fry foods
- Later, finely crushed versions of the foods given to adults
In my planted community tanks, newly mobile Panda Cory fry tended to disappear into plants and sheltered areas. As they grew, I repeatedly observed them grazing on algae-covered surfaces and on tiny pieces of food that had fallen where larger fish could not reach them. Once the pieces fitted into their mouths, they readily used these leftovers.
I would not use this as an excuse to leave fry unfed in a sterile tank. In a mature planted aquarium, however, algae, biofilm, microorganisms and tiny food particles can provide a valuable background food source while the fry remain hidden.
For maximum survival in a dedicated rearing container, use gentle sponge filtration, keep the water very clean and feed small amounts several times per day. Remove uneaten food before it fouls the bottom.
Panda Cory Frequently Asked Questions
How many Panda Corys should be kept together?
Keep at least six. If the aquarium has enough floor area, a group of 8-10 or more usually displays more confident and natural social behavior.
What temperature do Panda Corys need?
About 22-25°C (72-77°F) is a good long-term aquarium range. They are a relatively cool-water Corydoradinae species and should not be kept permanently at very high tropical temperatures.
What tank size do Panda Corys need?
A tank base around 45 × 30 cm is a practical minimum for a small group, but 60 × 30 cm or larger gives six to ten adults much more useful floor space.
What do Panda Corys eat?
Use sinking pellets or tablets as staple foods and supplement them with foods such as Artemia, Daphnia, bloodworms, mosquito larvae and other appropriately sized live or frozen foods.
Do Panda Corys eat algae?
Adults should not be regarded as algae-eating fish. In my own tanks, however, young fry visibly grazed on algae- and biofilm-covered surfaces while hiding among plants, together with tiny pieces of fallen food.
Do Panda Corys eat fish waste?
No. They may eat uneaten food that reaches the substrate, but fish feces are not a suitable food source. Panda Corys need a proper diet of their own.
How can you tell a male Panda Cory from a female?
Mature females are usually broader and rounder, especially when carrying eggs. Males are slimmer and more streamlined. Viewing the fish from above makes the difference easier to see.
Are Panda Corys easy to breed?
They can be. Healthy, mature fish often respond well to conditioning with rich foods and fresh, slightly cooler water changes. In my own aquariums they also bred repeatedly in planted community tanks without being moved to a dedicated breeding aquarium.
How long do Panda Cory eggs take to hatch?
Usually several days, commonly around 3-5 days depending on temperature and conditions.
What do Panda Cory fry eat?
After the yolk sac is absorbed, use microworms, newly hatched Artemia and very fine fry foods. In mature planted aquariums, fry may also graze on biofilm, algae-covered surfaces and tiny food particles.
Is Corydoras panda now called Hoplisoma panda?
Yes. A 2024 phylogenomic revision resurrected the genus Hoplisoma, and current taxonomic catalogues list the Panda Cory as Hoplisoma panda. The older name Corydoras panda remains widely used in the aquarium hobby.
Panda Cory Photo Gallery
For additional species information, see our Panda Cory profile.
This guide combines first-hand aquarium keeping and breeding observations with current taxonomic and biological references. See Eschmeyer’s Catalog of Fishes, Dias et al. (2024), phylogenomic revision of Corydoradinae, FishBase: Hoplisoma panda, and Seriously Fish: Panda Cory.
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