| 1a |
Pectoral fin with dark brown to black bar
running dorsoventrally at a posterior
angle across fin; dorsal and caudal fins also with dark
bars; anal-fin elements
7 or 8 (usually 7); second dorsal-fin elements 9-10
(nearly always 9)......................................................................…..
P. batrachoides |
| 1b |
Pectoral fins lacking bar running
dorsoventrally at a posterior angle across fin,
fin is bicolored (upper half black) or unpigmented; anal-fin
elements 8-11 ……. 2 |
| 2a |
Pectoral-fin rays 15; anal-fin
elements 8-9 …………..............………… P. alepis |
| 2b |
Pectoral-fin rays 16-19; anal-fin
elements 9-11 ……...........................………….. 3 |
| 3a |
Caudal fin with 3 oblique, dark bars; snout
vert short and blunt, with steep anterior
profile; second dorsal-fin elements 11-12 ………………………. P.
amblyrhnchus |
| 3b |
Caudal fin without 3 oblique, dark bars; snout
more acute, with flatter anterior
profile; second dorsal-fin elements 10-11 …………………............…………….
4 |
| 4a |
Pectoral fin bicolored, dark brown to black
on upper 9-11 rays and membranes
and white below; anal-fin elements 10-11 (usually 11) ………………
P. kaufmani |
| 4b |
Pectoral fin not bicolored; anal-fin elements
9-11 (usually 10) ….......................... 5 |
| 5a |
Posterior end of jaw extending past posterior
margin of pupil; caudal
peduncle slender (80-89 thousandths of SL); snout short
(44-55
thousandths of SL) …...................................................................................
P. boehlkei |
| 5b |
Posterior end of jaw not extending past posterior
margin of pupil; caudal
peduncle deeper (greater than 92 thousandths of SL); snout
longer
(greater tha 55 thousandths of SL) ………......................…………………..
P. celsus |
