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.
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. This species is close to C. adolfoi and C. burgessi but can be visually distinguished easily by the darkened gill cover. Generally the dorsal fin also contains more black pigment.
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Cat-eLog 
Callichthyidae 
/1.jpg "Corydoras sp. (C121)(1) - Click to enlarge")
/2.jpg "Corydoras sp. (C121)(2) - Click to enlarge")
/3.jpg "Corydoras sp. (C121)(3) Lateral view - Click to enlarge")
/4.jpg "Corydoras sp. (C121)(4) - Click to enlarge")
/5.jpg "Corydoras sp. (C121)(5) Pair (female to left) - Click to enlarge")
/6.jpg "Corydoras sp. (C121)(6) - Click to enlarge")
/7.jpg "Corydoras sp. (C121)(7) Laying eggs - Click to enlarge")
/8.jpg "Corydoras sp. (C121)(8) Eggs - Click to enlarge")
/9.jpg "Corydoras sp. (C121)(9) Laying eggs - Click to enlarge")
/10.jpg "Corydoras sp. (C121)(10) Laying eggs - Click to enlarge")
/11.jpg "Corydoras sp. (C121)(11) - Click to enlarge")
/12.jpg "Corydoras sp. (C121)(12) Fry - Click to enlarge")
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