Catfish Types for Home Aquariums

This guide covers aquarium catfish types with practical steps for home aquariums. Catfish aren't all bottom-dwelling algae machines — the family spans tiny Corydoras schools to giant red-tailed predators.

For related reading, see Best Algae-Eating Fish — Honest Guide and Honey Gourami.

Corydoras and Relatives

Small armored catfish that school on sand — classic community cleanup. Need groups of 6+, smooth substrate, and stable water.

Pygmy and habrosus suit nano tanks; bronze and panda Corydoras fit standard community 20 gallons+.

Plecos and Wood Eaters

Bristlenose plecos stay manageable (~4–6 inches) and eat algae plus vegetables. Common plecos grow huge — avoid unless you have hundreds of gallons.

Provide driftwood for Panaque species that digest cellulose.

Synodontis and African Cats

Synodontis petricola and multipunctatus suit rift lake tanks — nocturnal, territorial in groups. Upside-down cats add oddball appeal in peaceful setups.

Match water chemistry to lake of origin for Africans.

Glass and Swimmer Cats

Glass catfish need schools and gentle flow — transparent mid-water oddities. Asian shark catfish grow large quickly — pet store juveniles mislead buyers.

Always verify adult size on catfish — L-numbers and scientific names help.

Choosing Wisely

Sand substrate protects barbels. Feed sinking wafers — catfish starve when midwater fish eat everything first.

Quarantine wild-caught imports; catfish ship poorly if oxygen is low.