Exotic is the worst for using common names, the ones they call spotted hoplo would make you think they are Megalechis thoracta but the ones pictured dont look right to me…
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Looks like a black tail bar (Megalechis Picta) to me. Im not overly concerned with the variety but just not sure if the different ones will cohabitate well with each other.
I had a forked tail type before (brown hoplo, Hoplosternum littore) but kept it solo so I really dont know what to expect when mixing.
@sir_keith, do you have any insights on the hoplo family of catfish and wether mixing varieties is okay. Just concerned about aggression levels.