This article is from the Aquaria: Good (and Bad) First Fish; Breeding FAQ, by Dean Hougen and Elaine Thompson
Cory Cats are members of the family Callichthyidae, a family of
armored catfish from South America. Corys are small (generally 2 1/2"
long or less), schooling fish that are always searching the bottom of
the tank for food. There are at least 140 species of catfish in the
genus Corydoras. Some of these are quite delicate and die quickly even
in the hands of experts. The fragile ones, however, are rarely seen in
pet stores and are high priced when they can be found. The Corys you
will see for reasonable prices are hardy and can even survive in a
tank with low oxygen as they can swallow air from the surface and
absorb it through their intestines. Some Corys you may encounter are
the Bronze Cory - C. aeneus, the Spotted Cory - C. ambiacus, the
Leopard Cory - C. julii, the Skunk Cory - C. arcuatus, the Bandit Cory
- C. metae, and the Panda Cory - C. panda.
Corys generally feed at the bottom of the tank and special sinking
foods should be fed. These include sinking pellets like Tabi-Min and
frozen blood- worms. Care should be taken to insure that all frozen
foods are eaten quickly as they decay rapidly and can foul the tank.
Don't overfeed!
 
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