What is "ernstichthys"

Ernstichthys is a genus of banjo catfishes that occurs in the Amazon and Orinoco basins.

Ernstichthys species are small to medium-sized, armored aspredinids. Members of this genus are distinguished from all other aspredinids by having two sets of paired pre- anal-fin plates and a strongly recurved pectoral spine that is much longer than first branched pectoral-fin ray.