Taeniamia macroptera (Cuvier 1828)

Diagnosis: Rays: dorsal VI + I,9; anal II,13-15; pectoral rays 14 (rarely 13 or 15). Gill rakers 5-6 + 15-17. Lateral-line scales 25+3-5. Median predorsal scales 5-7. Body depth 2.4-2.7 in SL; body width 2.3-2.6 in body depth; eye diameter 2.55-3.0 in head length; first dorsal spine 2.0-2.9 in second spine; second dorsal spine 2.3-2.9, and third dorsal spine 2.4-2.8 in head length; spine of second dorsal fin 2.3-2.8, and second anal spine 2.6-3.2 in head length; pelvic-fin length 4.5-5.15 and caudal-peduncle length 4.3-5.4 in SL; distance from insertion of pelvic spine to anal-fin origin 3.8-4.8 in SL. Basilingual teeth absent. Posterior preopercular edge completely serrate, or nearly so; ventral edge serrate on posterior half. Scaly sheath along anal-fin base poorly developed or absent (Ref. 54391).

Mouthbrooders (Ref. 240). Distinct pairing during courtship and spawning (Ref. 205).

Dorsal spines (total): 7; Dorsal soft rays (total): 9; Analspines: 2; Analsoft rays: 13 - 15

Inhabits lagoon and fringing coral and rocky reefs with sand or rubble bottom in relatively clear water. Usually in aggregations, among branching corals, sometimes with its congeners (Ref. 36661, 48635, 54391).

分布於印度-西太平洋區，東印度洋至西太平洋海域。台灣分布於南部、北部及西南部海域。

無任何經濟價值。

體橢圓，高而側扁。前鰓蓋脊平滑，邊緣呈鋸齒狀。側線完全，延長到尾鰭。具鋤骨齒。鱗易落。臀鰭基底長；尾鰭呈叉狀。胸腔及肛門附近有發光器。D. VI-I，9；A. II，13-15；P. 14；Ll. 25+3-5；Pred.S. 5-7；GR. (5-6)+(15-17)； HL. 2.63；BD. 2.77 in SL；SnL. 4.57；ED. 3.64 in HL。體銀白，無黑色素胞；體側具有20餘條的橘色窄曲橫紋，尾柄有一可見之小眼點。各鰭透明。本種和褐斑長鰭天竺鯛(/A. fucata/極相似，而本種全身較白而無黑色素胞；吻部亦無線紋。原記載之原長鰭天竺鯛(/Archamia lineolata/)為本種之誤鑑。

主要棲息於近岸珊瑚枝狀間。群居性，以浮游動物或其它底棲無脊椎動物為食。