| choose the feature that relates
to your fish |
first dorsal fin modified as a suction disk on top of the head |
 dorsal fin preceded by one or more rays or spines unconnected by membranes |
small rayless adipose fin behind dorsal fin |
dorsal and caudal fins united, body tapering to a point |
single long dorsal fin without deep notch, not connected to caudal fin |
two dorsal fins separated by a distinct space |
single dorsal fin of short to medium length |
single elongate dorsal fin with deep notch or two dorsal fins not separated by a space |
