The name Corydoras is a combination of the Greek for "helmet" and "skin", referring to the two bony plates
flanking the body of these mini catfish. There are over 170 described species and numerous undescribed species, all
endemic to fairly small areas of South America. They can breathe in additional oxygen, if needed, from surface air.
The Panda Corydoras, Corydoras panda, named for its black patches especially over the eyes,
is native to slow-moving streams, ponds and flooded areas of the upper Amazon basin. It grows to some 5cm long. Like other corys,
diet is invertebrates and plant matter, mostly filtered from the stream bed or substrate.
The Smudge Spot Catfish or Corydoras, Corydoras similis, is native to slow-moving streams, ponds and flooded
areas of the Rio Madeira basin, Brazil. It grows to 6cm long.
The Delphax Corydoras, Corydoras delphax, is native to slow-moving streams, ponds and flooded
areas of the Inirida and upper Orinoco basins of Colombia. It grows to 6cm long.
Axelrod's Corys.
Pinks with larger Emerald Cory.
The Pink Corydoras, Corydoras axelrodi, a confusing common name since several are pink, but also called
Axelrod's Corydoras, is native to slow-moving streams and ponds of Colombia's Meta River basin. It grows to 5cm long. Several other
Corydoras look similar.
The Black Bar Corydoras, Corydoras duplicareus, has a common name similar to several others and looks similar
to several other corys, in particular: C. adolfoi, arcuatus, davidsandsi, melini, narcissus, zygatus, the last one called the Black Band Cory.
The Black Bar is also, ironically or sensibly, called the Duplicate Cory. It is native to streams and ponds of the upper Rio Negro basin
(as is Adolfo's, C. adolfoi). It grows to 5-6cm long.