Apogonichthyoides niger (Döderlein 1883)

Body depth high and each fin rounded.

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

Dorsal spines (total): 8; Dorsal soft rays (total): 9; Analspines: 2; Analsoft rays: 8

Exhibits the black gut phenomenon. In nocturnal predators, it appears to serve to conceal bioluminiscent prey in the stomach cavity (Ref. 46685).

Occurs solitarily around boulders scattered on sandy and muddy bottoms in bays. Breeding occurs from July to September. Males brood eggs in the mouth (Ref. 559).

分布於西北太平洋區，包括台灣及日本。台灣除東部海域外皆有產。

無任何經濟價值。

體極高，側扁。頭大。吻長。眼大，眼徑約等於吻長。下頜微突出。 D. VII-I，9；A. II，7-8；P. 15-17；C. 3-4，9+8，3-4； Pred.S. 2；GR. 2 or 3 or 4 7+1+2，2；HL. 2.03-2.38；BD. 2.15-2.42 in SL；SnL. 3.63-4.63；ED. 3.26-3.52 in HL。體棕黃色，體側有可區別的深色垂直暗帶；尾鰭透明，其它各鰭呈暗色。

主要棲息於礁石散布的砂泥底質海灣。以多毛類或其它底棲無脊椎動物為食。雄性具口孵行為。