Taiwanese Lefteye Flounder

description

Diagnostic features. D 78 – 84; A 58 – 61; P 10 – 14; C 3 + 11 + 3; LLs 49 – 52; GR 0 + 6 – 8 = 6 – 8; vert. 10 + 25 – 26 = 35 – 36. Gill rakers serrate, each raker with 2 – 5 stout spines; head 29.1 – 32.1 % SL; both-jaws teeth uniserial with anterior canines; extremely narrow or almost ridge-like interorbital in both sexes; pectoral fin on ocular side distinctly shorter than in other species (18.3 – 20.8 % SL in both sexes); small scattered spots on caudal fin. Size. Reaching 68.0 mm SL (Amaoka & Ho, 2018).

The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan

distribution

Distribution. Known only from off Ke-tzu-liao, Kaohsiung, southwestern Taiwan.

The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan

description

Description. Data for the holotype are followed by those for the paratypes in parentheses. Dorsal-fin rays 80 (78 – 84), anal-fin rays 58 (60 – 61), ocular-side pectoral-fin rays 12 (10 – 14), blind-side pectoral-fin rays 9 (8 – 10); caudal-fin rays 3 + 11 + 3 (2 – 3 + 11 – 12 + 3); ocular-side pelvic-fin rays 6 (6), blind-side pelvic-fin rays 6 (6), scales in lateral line 51 (49 – 52), gill rakers 0 + 7 (0 + 6 – 8), vertebrae 10 + 25 (10 + 24 – 10 + 25). In SL: HL 3.34 (3.12 – 3.44), body depth 2.01 (1.91 – 2.01). In HL: snout 4.28 (3.98 – 4.83), upper eye diameter 4.31 (3.75 – 4.31), lower eye diameter 4.11 (3.93 – 4.38), interorbital width 33.8 (27.5 – 67.7), ocular-side upper jaw 2.19 (2.02 – 2.26), blind-side upper jaw 2.17 (1.98 – 2.21), ocular-side lower jaw 1.74 (1.62 – 1.75), blind-side lower jaw 1.71 (1.51 – 1.68), caudal peduncle depth 2.30 (2.30 – 2.48), ocular-side pectoral fin 1.53 (1.40 – 1.62), blind-side pectoral fin 2.16 (2.07 – 2.48), ocular-side pelvic fin 2.33 (2.09 – 2.80), blind-side pelvic fin 2.39 (2.46 – 2.81), base of ocular-side pelvic fin 2.71 (2.58 – 2.85), base of blind-side pelvic fin 8.46 (7.50 – 9.71), longest dorsal fin ray 2.26 (2.06 – 2.39), lon

Review of the genus Engyprosopon Günther, 1862 (Pleuronectiformes: Bothidae) from waters off Taiwan, with descriptions of two new species

diagnosis

Diagnosis. A species of Engyprosopon characterized by the combination of serrate gill rakers, large head (3.1 – 3.4 in SL); extremely narrow or almost ridge-like interorbital in both sexes; ocular-side pectoral fin distinctly short, 1.4 – 1.6 times in HL in both sexes; and no rostral or orbital spines in either sex (Fig. 18 A).

Review of the genus Engyprosopon Günther, 1862 (Pleuronectiformes: Bothidae) from waters off Taiwan, with descriptions of two new species