Cory = helmet, doras = skin. In this case it was incorrectly used to mean armour (cuirasse) instead of skin in allusion to the dual rows of plates that run along the flanks of this genus. This specific epithet literally means from two(di=two) rivers(fluviatalis=from the river).
Corydoras are identified by their twin rows of armour plates along the flanks and by having fewer than 10 dorsal fin rays. They are most commonly confused with the other genera in the sub-family, namely Brochis, Scleromystax and Aspidoras. Very similar to C. adolfoi but it has a thicker black back stripe. Pectoral fin spine serrated on C. duplicareus, smooth on C. adolfoi.
Corydoras duplicareus spawned at a temperature of 74°F and a pH of 7.0. 30 to 40 eggs scattered primarily across the water line, in fact some of the eggs were out of the water all together. The eggs 1.8mm in size are cream in color.Eggs hatched in 5 days. In subsequent spawnings some eggs were deposited on plants as well. Fry initially fed newly hatched baby brine shrimp. Sinking pellets after a few weeks.
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