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head: wide, flat, spiny
eyes on tophead: 1st D spine = fish polev wide mouth
teeth long, sharp -
head not spiny; eyes on side of head
body globular, compressedhead: 1st D spine = fish polelarge mouth, small teethleg-like pelvic before leg-like pectoral -
body globular, + conspicuous sensory canalsDI = single spine before eyemouth large, oblique, opens abovegill opening small, above pectoral base
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body a disc; head flat, triangulararmour of cones & prickleslure between pointed snout & small mouthgill opening above pectoralpectorals leg-like