Many-spotted lefteye flounder

description

Diagnostic features. D 103 – 114; A 81 – 92; P 11 – 13; C 2 + 13 + 2 = 17; LLs 71 – 82; GR 0 – 1 + 8 – 9 = 8 – 9; vert. 10 + 30 – 32 = 40 – 42. Body elongated, greatest depth near middle part of body (36.7 – 42.1 % SL). Head small, its length about 60 – 70 % of body depth (25.3 – 27.6 % SL); front of head with small concavity anterior of upper eye; head profile gentle, same in both sexes. Snout shorter than eye diameter. Rostral spine absent on tip of snout in both sexes. Eye diameter much shorter than upper-jaw length. No orbital spines in both sexes. Interorbital ridge very low, extending from anterior margin of lower eye to posterior margin of upper eye. Mouth moderately large, upper-jaw length on ocular side 9.7 – 10.9 % SL; maxilla extending to anterior margin of lower eye or slightly beyond it. Teeth on both jaws uniserial, several pairs enlarged anteriorly; lateral teeth on lower jaw stronger and wider spaced than those on upper jaw. Gill rakers on lower limb, long and serrated inner edge; 0 (rarely 1) gill raker on upper limb. Scales moderately large, ctenoid with row of short ctenii; cycloid on blind side. Few anterior dorsal-fin rays more or less elongate, longer in males

The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan

discussion

Remarks. This species resembles A. oxyrhynchus, A. japonicus and A. yamanakai in having many scales on the lateral line and serration on the edge of the gill rakers. It differs however from the latter two species in having the maxilla not extended to below middle of lower eye, several anterior rays of dorsal fin elongated in males and the two uppermost and lowermost rays of the caudal fin unbranched.

The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan

distribution

Distribution. Northeastern, western and southwestern Taiwan; Indian and Western Pacific oceans (Amaoka, 2016).

The lefteye flounder family Bothidae (Order Pleuronectiformes) of Taiwan