🐟 Corydoras Catfish Care Guide (Corydoras spp.)

Corydoras catfish are small, peaceful bottom-dwelling fish loved for their active behavior and community-friendly nature. Native to South America, these schooling fish thrive in groups and help keep aquariums clean by scavenging leftover food. With their armored bodies, playful personalities, and wide variety of species, Corydoras are a staple in freshwater aquariums.

🔑 Quick Facts

• Scientific Name: Corydoras spp. (multiple species)
• Common Name: Cory catfish, Corydoras
• Origin: South America (Amazon & tributaries)
• Size: 1–3 inches depending on species
• Lifespan: 5–7 years (sometimes longer)
• Temperament: Peaceful, social
• Care Level: Easy to Moderate

🏠 Tank Requirements

• Minimum Tank Size: 15–20 gallons (depending on species and group size)
• Water Temperature: 72–78°F (22–26°C)
• pH: 6.5–7.5
• Hardness: 3–12 dGH
• Substrate: Fine sand or smooth gravel to protect sensitive barbels
• Aquascape: Plants, driftwood, hiding spots; open bottom space for foraging

🍽️ Diet

• Corydoras are omnivores and thrive on a varied diet:
• Sinking pellets & wafers (designed for bottom feeders)
• Frozen & live foods: bloodworms, brine shrimp, daphnia
• Occasional blanched vegetables (zucchini, spinach)
• Supplement with quality flake foods
• Tip: Feed sinking foods so they can reach the bottom before tank mates eat them all.

🧑🤝🧑 Tank Mates

• Peaceful community fish: tetras, rasboras, guppies, livebearers, dwarf gouramis
• Other bottom dwellers: otocinclus, kuhli loaches, shrimp, and snails
• Avoid aggressive species like cichlids, large barbs, or fin-nippers

🧠 Behavior & Tips

• Always keep in groups of 6 or more for social comfort.
• Very active, constantly sifting substrate for food.
• May dash to the surface for gulps of air (normal behavior).
• Sensitive to poor water quality → keep tanks clean with regular maintenance.

❓ FAQ

Q: Do Corydoras clean the tank?
A: They help by eating leftover food, but they don’t replace cleaning or maintenance.

Q: Can I keep one Corydoras alone?
A: No, they are schooling fish and need at least 6 to feel secure and thrive.

Q: Do Corydoras need sand?
A: Sand is best, but smooth gravel can work if it doesn’t damage their barbels.

Q: How long do Corydoras live?
A: Most live 5–7 years, but with excellent care, some live over 10.