Species: Syacium longidorsale, Long-fin flounder, Pompadour flounder

Syacium longidorsale Murakami & Amaoka, 1992

Pompadour flounder, Long-fin flounder

Body height 42-48% of SL; head length 26-28% of SL; snout profile convex, at most a slight notch before top eye; snout (to top eye) shorter than eye, length before top eye < 24% of head length; eyes on left side (uncommonly on right side);  eyes parallel; width between eyes < 6% of head length; mouth of moderate length, 31-37% of head length, ends under mid-eye; jaws on blind side not arched; fixed teeth in 2 rows in upper jaw, 1 row lower jaw; 7-9 short, fat, serrated lower gill rakers; dorsal rays 82-92, 3rd-5th  rays long, ~ 30-50% of head length; 65-74 anal rays; eye-side pectoral 67-78% of head length (to 115% in male, with 1st  ray elongate); base of eye side pelvic on midline of body; urinary papilla on blind side, immediately behind anus; tail base relatively wide (width 37-45% of SL); lateral line not extending onto head, starts at corner of operculum, relatively straight; 50-57 lateral line scales; scales very rough in eye-side, smooth an blind side.