Small Mouth Threadfin

With 5 pectoral filaments; uppermost not reaching to (or extending slightly beyond) posterior tip of pectoral fin. Pectoral fin, rays short, 17-20% of SL; all rays branched except uppermost 1 or 2. Second dorsal spine long, 7-9% of SL. Well-developed swim bladder. A large black spot anteriorly on lateral line (Ref. 40958). Posterior margin of maxilla reaching to (or slightly short of) level of posterior margin of adipose eyelid. Lower tip of 7th proximal pterygiophore of 1st dorsal fin directed backwards. Lateral line squamation on caudal fin unbranched, extending to upper end of lower caudal fin lobe (Ref. 40970).

Dorsal spines (total): 9; Dorsal soft rays (total): 12 - 14; Analspines: 3; Analsoft rays: 11 - 12; Vertebrae: 10 - 14

Found in turbid coastal waters, estuaries and mangrove creeks, and in mangrove-lined rivers (Ref. 57343). Occurs mainly over shallow muddy and sandy bottoms of the continental shelf. Euryhaline (Ref. 12743). Feeds on fish and benthic invertebrates (Ref. 11889).

Found in turbid coastal waters, estuaries and mangrove creeks, and in mangrove-lined rivers (Ref. 57343). Euryhaline (Ref. 12743). Feeds mainly on small crustaceans (especially shrimps), fishes and benthic organisms (Ref. 3479).

fisheries: of no interest

分布於印度-西太平洋區，西起印度，東至菲律賓，北至台灣南部，南至新加勒多尼亞、斐濟等。台灣分布於南部海域。

利用流刺網、底拖網、定置網及釣具等漁法捕獲。肉質細緻鮮美，為高經濟價值魚種，清蒸是最適宜的烹調方法。

體延長而側扁，後眼眶長小於第二背鰭起點處體高之3/4。頭中大，前端圓鈍。吻短而圓。眼較大，長於吻長，位於頭的前部；脂性眼瞼發達，呈長橢圓形。口大，下位，口裂近水平；下頜唇發達，但未達下頜縫合處；上下頜兩側均有牙齒，其外側無小齒；鋤骨齒退化，腭骨具齒。鰾不具側枝。體被櫛鱗，背、臀及胸鰭基部均具鱗鞘，而胸鰭及腹鰭基部腋鱗長尖形，兩腹鰭間另具一個三角形鱗瓣；側線直，且向後方緩慢傾斜。背鰭兩個；胸鰭短於頭長，下側位，上部胸鰭條皆分叉，下部具有5枚游離之絲狀軟條；尾鰭深叉，上下葉不延長如絲。體背部呈灰綠色，體側銀白；前端側線具一污斑。各鰭灰色而略帶黃色。

主要棲息於沿岸或淺的大陸棚砂泥底質地形環境。喜群棲性，常成群洄游，有季節洄游之習性，會隨著漁期到來而大量湧現。以蝦、蟹、魚類及蠕蟲等底棲生物為食。