Now the point at which the controversy
may have started, was a discussion in the PlanetCatfish
forums regarding the "Black Cory and origin, it was
mentioned that there was a dark form of another C.
aeneus type we now know as C. venezuelanus
that came from the Northern Guarico State of Venezuela
and it is possible that this discussion triggered the
The dark form of C. venezeulanus
have never commercially entered the hobby. If you are
having trouble distinguishing one from the other, here
is a simple guide. Young C. schultzii "Black"
tend to have all reddish fins which darken with maturity.
C. venezuelanus look very similar to the young
C. schultzii "Black". However both
the normal C. venezuelanus we see in the hobby,
and the dark form have reddish dorsal and adipose fins,
but the caudal, anal and ventral fins are grey.