Corydoras Catfish Care Sheet
BeginnerCorydoras spp. · fish
Corydoras catfish are peaceful, social bottom-dwellers that thrive in groups of 6 or more. They require soft, sandy substrate to protect their barbels and stable water conditions.
Quick care stats
Adult size1-2.5 inches
Lifespan3-5 years
Min tank size10 gallons
Water temp74-80°F
pH6.5-7.5
Hardness5-15 dGH
Temperamentpeaceful
Group / schoolinggroup of 6+
Tank matesPeaceful community fish such as tetras, rasboras, and dwarf cichlids.
DietSinking pellets or wafers as staple, supplemented with frozen or live foods like bloodworms and brine shrimp; feed once or twice daily.
What you need (full setup)
🔧 Aquarium tank (10+ gallons)Provides swimming space and territory for a school.🔧 Sponge filter or hang-on-back filterGentle filtration with low current suitable for small bottom feeders.🔧 Adjustable heaterMaintains stable temperature within 74-80°F range.🔧 ThermometerMonitors water temperature to ensure consistency.🔧 Fine sand or smooth gravel substratePrevents damage to sensitive barbels and allows natural foraging behavior.🔧 Water conditioner (dechlorinator)Removes chlorine and chloramines from tap water to make it safe.🔧 Freshwater test kit (pH, ammonia, nitrite, nitrate)Enables monitoring of water parameters for optimal health.🔧 Live plants and driftwood or cavesProvides hiding spots, reduces stress, and mimics natural habitat.
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Common health issues
- Barbel infections from sharp gravel
- Stress or disease from too small groups
- Poor water quality leading to health problems
⚠️ For any sign of illness (not eating, lethargy, swelling, retained shed), see a qualified exotics vet. Care sheets are general guidance only.