Panda Corydoras Care Guide: Tank Setup, Diet & Tank Mates

Panda corydoras (Corydoras panda) are a small, peaceful catfish from the cool headwaters of the Peruvian Amazon, named for the bold black eye-mask and dorsal patch that bring an unmistakable resemblance to their namesake bear. They have anchored the beginner-friendly cory lineup since their 1971 description, and most fish you find in stores today come from commercial breeding farms in Eastern Europe and Southeast Asia rather than wild collection. They are cooler-water, slower-flow, and slightly more parameter-sensitive than the bronze and albino varieties hobbyists usually encounter first -- but in a properly set-up tank they are bulletproof, charismatic, and genuinely entertaining to watch.

If you are deciding between cory species, this guide also pairs well with our bronze corydoras and albino corydoras pages, and the pygmy corydoras guide if you want a true nano-scale alternative.

Species Overview#

Panda corydoras come from a small, specific stretch of the upper Amazon basin and have very particular preferences that flow directly from where they evolved. Knowing the source habitat is the fastest way to get their tank right on the first try.

Adult size

2 in (5 cm)

Lifespan

4-10 years

Min tank

20 gallons (school of 6+)

Temperament

Peaceful, schooling

Difficulty

Beginner

Diet

Omnivore (bottom feeder)

Natural Habitat#

Panda corydoras live in the Ucayali River basin in eastern Peru, specifically in clear, cool tributaries fed by Andean snowmelt. The water in these streams runs soft (2-12 dGH), slightly acidic (pH 6.0-7.4), and surprisingly cool by tropical standards -- often 68-72°F at the source, warming into the mid-70s downstream. The substrate is fine sand, the flow is gentle, and dense leaf litter and submerged wood provide cover. Wild groups forage along the bottom in shoals of 20 or more, using their barbels to sift through sand for insect larvae, worms, and small crustaceans.

The cool-water requirement is the single most important takeaway from their natural history. Unlike most South American tetras and cichlids that come from warm lowland blackwater, panda corys evolved in higher-altitude streams. Pairing them with discus or rams in an 82°F tank will visibly stress them within weeks.

Appearance & Size#

Adults reach about 2 inches (5 cm) at full size, with females slightly larger and rounder than males. The body is a creamy white-to-pale-pink base color marked by three solid black patches: a wide eye mask, a triangular black saddle on the dorsal fin and surrounding back, and a dark spot at the base of the caudal fin. The barbels under the mouth are short, thick, and white -- inspect them carefully when buying, because barbel erosion is the single best indicator of substrate damage or chronic poor water quality.

Sexual dimorphism is subtle. Females are noticeably wider when viewed from above, especially when conditioned for spawning. Males stay slimmer and slightly smaller. Both sexes share identical color patterns.

Lifespan#

A well-kept panda cory lives 4 to 10 years, with the longer end of that range achievable in stable, mature tanks kept at the cooler end of their temperature range. Hot, parameter-swinging tanks routinely cut their lifespan in half. Captive-bred stock from established farms typically outlives wild-caught fish by several years, since wild specimens arrive already stressed from collection and shipping.

Water Parameters & Tank Requirements#

Panda corys are forgiving about most things and inflexible about a few specific ones. Get the substrate, temperature, and group size right and almost nothing else will trip you up.

Ideal Water Parameters#

The numbers below match the species' Ucayali River origin and are the same ranges used by commercial breeders.

Tank Size & Substrate#

A 20-gallon long is the practical minimum for a school of 6 panda corys. The "long" footprint matters more than total volume -- corys are bottom-dwellers and need horizontal swimming space, not vertical depth. A standard 20-gallon high tank is the wrong shape; a 20-long, 29-gallon, or 33-long is ideal. For a school of 8-10 (recommended for best behavior), a 29-gallon is a much better starting point. See our 20-gallon tank stocking guide for compatible community options.

Substrate is non-negotiable: fine pool-filter sand or rounded inert play sand only. Sharp gravel and standard aquarium gravel destroy cory barbels over a period of weeks to months. Once barbels are eroded, infection sets in, the fish stops eating efficiently, and recovery is slow even in clean water.

Filtration & Flow#

Gentle, well-oxygenated flow is the goal. Panda corys are not strong swimmers and dislike being pushed around by strong currents. A sponge filter rated for 30 gallons handles a small panda tank perfectly, especially for fry-safe setups. Hang-on-back filters work well if the outflow is baffled with a sponge or directed against the glass to break up the current. Canister filters are fine for larger tanks as long as the spray bar is angled upward to break the surface rather than across the bottom.

The cooler temperatures pandas prefer hold less dissolved oxygen than warmer water, so strong surface agitation is critical. Run an air stone or position the filter return to ripple the surface continuously. If you ever see your school dashing to the surface to gulp air repeatedly, oxygen is the first thing to check.

Diet & Feeding#

Panda corys are omnivorous bottom feeders that thrived in the wild on insect larvae, small crustaceans, and organic detritus sifted from sand. Replicating that variety in captivity takes about two foods and a basic schedule.

What Panda Corydoras Eat#

In captivity, the staple is a sinking pellet or wafer designed for catfish -- Hikari Sinking Wafers, Bug Bites Pleco Formula, Repashy Bottom Scratcher, and Northfin Bottom Feeder are all proven options. Supplement 2-3 times per week with frozen bloodworms, frozen daphnia, frozen brine shrimp, or live blackworms. Pandas will also pick at uneaten flake food and leftover micropellets that drift down from upper-level fish, but treat that as bonus calories rather than the meal plan.

Pandas are not algae eaters, despite their bottom-feeder lifestyle. Do not buy them to "clean the tank" -- that is a myth. They eat protein and need to be fed directly.

Feeding Schedule & Tips#

Feed once or twice daily, with portion sizes small enough that everything is consumed within five minutes. The feeding mistake unique to corys is assuming they will scavenge what falls from upper feedings. In practice, faster mid-water fish like tetras and rasboras intercept almost everything before it reaches the substrate.

The fix is to drop sinking wafers or pellets directly into the tank, ideally in a spot away from the most active mid-water fish. Many keepers feed pandas after lights-out -- corys are crepuscular and become much more active in dim light, and the schoolers above slow down once the lights are off. A five-minute window with a small wafer dropped into a corner of the tank is usually enough to ensure the cory school gets a full meal.

Tank Mates & Compatibility#

Panda corys are about as universally compatible as freshwater fish get, with one big constraint: their tank mates must tolerate cooler water in the 70-77°F range.

Best Tank Mates#

The ideal lineup pairs panda corys with peaceful, mid-water dither fish that share their cool-water preference. Strong choices include:

• Ember tetras, neon tetras, cardinal tetras -- small, peaceful, and tolerant of the cooler end of cory range
• Harlequin rasboras, lambchop rasboras -- shoaling mid-water fish that ignore the bottom
• Celestial pearl danios -- nano-scale and equally cool-water friendly
• Other corydoras species -- pandas often shoal cross-species with bronze, albino, or sterbai corys when kept in a single mixed group
• Otocinclus catfish -- peaceful algae-grazers that occupy a similar bottom niche without competing for food
• Peaceful dwarf cichlids -- Bolivian rams (not German blue rams, which need warmer water), Apistogramma in larger tanks

For a deeper look at compatible species, our freshwater fish overview catalogs the most popular community options sorted by temperament and water needs.

Fish to Avoid#

Anything aggressive, large enough to eat a 2-inch fish, or warm-water-obligate is out. Specifically avoid:

• Aggressive cichlids -- oscars, jack dempseys, convicts, most Central American species
• Large barbs -- tinfoil barbs and tiger barbs (the latter for fin-nipping)
• Discus -- not aggressive, but require sustained 82-86°F that will cook your pandas
• German blue rams -- same temperature problem as discus
• Loaches with sharp mouths -- yoyo loaches and clown loaches sometimes harass smaller bottom-dwellers
• Adult angelfish -- can swallow small corys headfirst

Keeping Them in Groups#

Panda corys are obligate shoalers. In smaller numbers they hide, eat poorly, lose color, and are more susceptible to disease. The minimum is six; eight to twelve is where their behavior becomes genuinely interesting. Watching a properly sized school move across the substrate as a coordinated unit -- pausing, sifting, breaking apart, regrouping -- is the entire reason to keep them.

A common mistake is buying three pandas, two albinos, and two bronzes "to add variety." Mixed cory species will sometimes shoal together, but the behavior is much weaker than a single-species group of six or more. If you want variety, run two species at six each rather than fragmenting into trios.

Breeding Panda Corydoras#

Panda corys are one of the easier corydoras to spawn at home. The process maps directly to the rainy-season cues their wild population uses in Peru.

Conditioning & Triggering Spawning#

Start with a healthy school of 6+ in a stable 20- to 29-gallon tank. Condition the group for 2-3 weeks on heavy protein -- frozen bloodworms, live blackworms, baby brine shrimp -- fed twice daily. Females will visibly plump up as eggs develop.

The trigger is a simulated rainy season: drop 30-50% of the tank water and replace it with cooler water (about 5°F below the tank's normal temperature) using treated tap water with no added minerals. Do this in the evening. Within 12-48 hours a conditioned group will start the classic "T-position" courtship, with the male holding sideways across the female's barbels while she takes a sperm packet and uses it to fertilize 4-6 eggs held in her clasped pelvic fins.

Egg Care & Fry#

Females deposit eggs on glass, broad plant leaves (anubias and java fern work well), and spawning mops. A typical clutch ranges from 30 to 100 eggs across a single spawning night. Adults will eat eggs and fry given the chance, so either move the parents to another tank or carefully roll eggs off the glass with a credit card and transfer them to a separate hatching container with an air stone.

Eggs hatch in 3-5 days. Fry absorb their yolk sac in another 24-48 hours and then need food. Start with infusoria or commercial liquid fry food for the first week, then transition to micro-worms and freshly hatched baby brine shrimp. Expect 60-80% survival in a well-managed setup. Fry reach saleable size (about 0.75 inch) in 8-12 weeks.

Common Health Issues#

Panda corys are hardy when kept in the right conditions and prone to a couple of specific problems when they are not.

Barbel Erosion & Fin Rot#

Worn or missing barbels almost always trace back to the substrate. Sharp or rough gravel grinds them down over weeks of normal sifting behavior. Once eroded, the exposed tissue becomes infected with opportunistic bacteria, leading to secondary fin rot and white-edged ulcers near the mouth. The fix is two-step: switch the substrate to fine sand, and treat the bacterial infection with a broad-spectrum aquarium antibacterial like Seachem KanaPlex or API Furan-2. Mild cases regrow barbels within a month; severe erosion may be permanent.

Poor water quality accelerates the same problem even on sand. Weekly 25-30% water changes and zero ammonia/nitrite readings are the prevention.

Ich & Fungal Infections#

Ich (Ichthyophthirius multifiliis) presents as fine white spots scattered across the body and fins. Standard ich treatment uses temperature elevation to 82-86°F to accelerate the parasite's life cycle, but that approach is risky with panda corys -- the heat alone can stress them severely. Instead, use a half-dose of a copper-free medication like Ich-X or a salt treatment at 1 teaspoon per gallon dissolved gradually, and only raise the temperature to 78°F (not higher). Corys are also notoriously sensitive to copper, so avoid any copper-based medication entirely.

Fungal infections appear as cottony white tufts on damaged tissue (often eroded barbels or torn fins). Treat with methylene blue dips or a tank-wide course of Pimafix, and address the underlying water quality or substrate issue that allowed the wound to occur in the first place.

Where to Buy & What to Look For#

A healthy panda cory from a reputable source will live the better part of a decade. A stressed, barbel-damaged specimen from a poorly maintained tank may not survive its first month.

Captive-Bred vs. Wild-Caught#

Captive-bred panda corys are the default in most local fish stores today, and they are dramatically hardier than wild-caught specimens. Farm-raised fish from Eastern Europe and Southeast Asia arrive already accustomed to harder, warmer tap water than their Peruvian ancestors knew, and they accept dry foods without coaxing. Wild-caught pandas occasionally appear in specialty importers' lists at higher prices, but they require softer water, more careful acclimation, and have a higher early-mortality rate. Unless you have a soft-water blackwater setup ready, buy captive-bred.

Always ask the store explicitly. Reputable shops know their source and will tell you the breeder or farm. Stores that cannot or will not answer the question are usually selling whatever the wholesaler shipped them.

Signs of a Healthy Fish#

Buy at least six fish from the same tank to keep the school together and minimize introduction stress. Acclimate using the drip method over 60-90 minutes -- corys are not as sensitive to pH swings as some species, but the slow temperature equalization matters, especially since the store water is likely warmer than your panda tank.

Quick Reference#

• Tank size: 20 gallons (long footprint) minimum for a school of 6; 29+ gallons for 8-10
• Temperature: 68-77°F -- cooler than most tropicals
• pH: 6.0-7.4
• Hardness: 2-12 dGH
• Substrate: Fine sand only -- never gravel
• Filtration: Sponge filter or baffled HOB; high oxygenation
• Diet: Sinking wafers/pellets daily; frozen bloodworms or daphnia 2-3x weekly
• Group size: Minimum 6, ideally 8-12
• Tank mates: Ember/neon tetras, harlequin rasboras, otocinclus, other cool-water corys
• Avoid: Discus, German blue rams, aggressive cichlids, sharp gravel, copper medications
• Lifespan: 4-10 years
• Difficulty: Beginner