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Nelson, J.S., 1994

Percopsiformes trout-perches, pirate perches and cavefishes

Teleostei

Lophiiformes 50 M years

Carroll, R., 1988  |  Helfman, G., B. Collette and D. Facey, 1997

early Tertiary

Marine

Fresh

Brackish

Premaxilla nonprotractile; ectopterygoid and palatine with teeth; pelvic fins, if present, behind pectorals and with 3-8 soft rays; spines (normally weak) usually present in dorsal fin; many species with ctenoid scales; six branchiostegal rays; 16 branched caudal rays; orbitosphenoid, basiphenoid, and suborbital shelf absent; vertebrae 28-35.

Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335.

Greek, perké = perch + Greek,opsis = look, appearance + Latin, forma = shape (Ref. 45335).

( n = 3 ) -
Amblyopsidae Aphredoderidae Percopsidae

Ref.
[ e.g. 9948]                       

Glossary
                    [ e.g. cephalopods]