ing ▁ray s . ▁The ▁ad ip ose ▁fin ▁does ▁not ▁contain ▁any ▁ray s , ▁is ▁long ▁and ▁well ▁developed , ▁and ▁has ▁a ▁convex ▁shape . ▁The ▁pel vic ▁fin ▁contains ▁one ▁un branch ed ▁and ▁six ▁to ▁seven ▁branch ed ▁ray s . ▁The ▁front ▁edge ▁of ▁the ▁pel vic ▁fin ▁is ▁vert ically ▁forward ▁of ▁the ▁front ▁edge ▁of ▁the ▁ad ip ose ▁fin . ▁The ▁anal ▁fin ▁contains ▁three ▁to ▁five ▁un branch ed ▁and ▁seven ▁to ▁nine ▁branch ed ▁ray s ; ▁it ▁is ▁vert ically ▁aligned ▁with ▁the ▁ad ip ose ▁fin . ▁The ▁tail , ▁or ▁ca ud al ▁fin , ▁is ▁for ked , ▁with ▁pointed ▁lo bes , ▁and ▁contains ▁eight ▁ray s ▁on ▁the ▁upper ▁lo be , ▁nine ▁ray s ▁on ▁the ▁lower ▁lo be . ▁ ▁The ▁mouth ▁of ▁the ▁fish ▁faces ▁down ward ▁and ▁has ▁wide ▁lips ▁that ▁contain ▁pap illa . ▁All ▁members ▁of ▁Sy nd ont is ▁have ▁a ▁structure ▁called ▁a ▁pre max ill ary ▁to oth pad , ▁which ▁is ▁located ▁on ▁the ▁very ▁front ▁of ▁the ▁upper ▁j aw ▁of ▁the ▁mouth . ▁This ▁structure ▁contains ▁several ▁rows ▁of ▁short , ▁ch is el - sh aped ▁teeth . ▁In ▁some ▁species , ▁this ▁to oth pad ▁is ▁made ▁up ▁of ▁a ▁large ▁patch ▁with ▁several ▁rows ▁in ▁a ▁large ▁cluster . ▁In ▁other ▁species ▁of ▁Sy nd ont is , ▁this ▁to oth pad ▁is ▁clearly ▁divided ▁into ▁two ▁separate ▁groups , ▁separated