Satyrichthys

Kawai, Toshio, 2013, Revision of the peristediid genus Satyrichthys (Actinopterygii: Teleostei) with the description of a new species, S. milleri sp. nov., Zootaxa 3635 (4), pp. 419-438 : 420

Key to the species of Satyrichthys

1 Number of lip barbels 2 (rarely 1)......................................................................... 2

- Number of lip barbels 3 or 4 (rarely 5).................................................................... 4

2 Longest (filamentous) barbel relatively short (6.8 % SL); number of chin barbels 1......................... S. longiceps

- Longest (filamentous) barbel relatively long (12.0–23.1 % SL); number of chin barbels 0 or 2 (rarely 1)................. 3

3 Dusky small spots along the base of dorsal fin; number of chin barbels 0 (rarely 1)......................... S. clavilapis

- Dusky small spots scattered on head, body and dorsal fin; number of chin barbels 2 (rarely 1)................... S. rieffeli

4 Antrose spines absent on upper lateral row of posterior bony plates ( Fig. 2 A); equilateral-triangular rostral projection.............................................................................................. S. milleri sp. nov.

- Antrose spines present on upper lateral row of posterior bony plates ( Fig. 2 B); stick-like rostral projection............... 5

5 Parietal bones unequal in size on midline (left side bone either shorter than or longer than that of right side: Fig. 3 A).................................................................................................... S. laticeps

- Parietal bones of each side equal in size on midline ( Fig. 3 B)................................................... 6

6 No spots on dorsal fin; number of lip barbels 3 and chin 0 (rarely 2).................................. S. moluccensis

- Many spots on spinous dorsal fin; number of lip barbels 4 and chin 3....................................... S. welchi

Figures

FIGURE 2. Dorsal views of the posterior bony plates of Satyrichthys milleri sp. nov., HUMZ 194166, 195 mm SL, paratype (A) and Satyrichthys laticeps, HUMZ 73294, 339 mm SL (B). Arrows indicate antrose spines on the upper lateral row.

FIGURE 3. Dorsal views of the head of Satyrichthys laticeps, HUMZ 73294, 339 mm SL (A) and Satyrichthys moluccensis, HUMZ 212426, 170 mm SL (B).