Ostichthys kaianus (Günther 1880)

This species is distinguished by the following characters: 2½ scales above lateral line to midbase of spinous portion of dorsal fin; anal fin origin beneath spinous portion of dorsal fin; upper procurrent spiniform caudal-fin rays 4 and lower 3; no half scale anterior to the first lateral-line scale; pectoral-fin rays 15-17 (usually 16); lateral-line scales 28-30 (usually 28, rarely 30); dorsal profile of head slightly convex; gill rakers 7-9 + 14-16; the last dorsal-fin spine is about equal in length to penultimate spine; space between last dorsal-fin spine and first dorsal-fin ray about half as broad as space between last two dorsal-fin spines; depth of body 2.05-2.2 in SL; head length 2.15-2.4 in SL; snout short, 4.2-4.9 in HL; least depth of caudal peduncle 3.8-4.6 in HL; colour when fresh is reddish with a series of relatively narrow silvery white dashes (middle of each scale has a horizontal streak nearly full-width of scale), forming whitish stripes on body (Ref. 114923).

Inhabits rocky reefs at considerable depths (Ref. 9137). Seen in coelacanth caves at 182 and 192 m (Ref. 58472). Nocturnal species (Ref. 75154). The strong spines and spiny scales of this fish would discourage most predators (Ref. 58472).

Seen in coelacanth caves at 182 and 192 m (Ref. 58472).

fisheries: commercial

分布於印度洋：留尼旺島與澳洲西北部；太平洋：印尼與新幾內亞，北至琉球群島，南至澳洲北部。臺灣分布於東部、西南部、南部和澎湖等海域。

稀有種。

體呈卵圓形，中等側扁。頭部具黏液囊，外露骨骼多有脊紋；鼻骨間的凹溝V字形。眼大。口端位，裂斜；主上頜骨長未端達眼後緣；頜骨、鋤骨及腭骨均有絨毛狀群齒。前鰓蓋骨後下角無強棘；鰓蓋骨及下眼眶骨均有強弱不一的硬棘。體被大型粗櫛鱗，後緣具小棘；側線完全，側線鱗數28，側線至背鰭硬棘中間點之鱗片數2.5。鰓耙數7-9+1+12-13。背鰭連續，單一，硬棘部及軟條部間具深凹，具硬棘XII，軟條12-13；最後一棘稍長或等長於前一棘。臀鰭有硬棘 IV ，軟條11；胸鰭軟條 16；尾鰭深叉形。體淡紅色，沿著每列的鱗片上有一縱向的白色水平線而形成ㄧ系列的銀白色班紋。

主要棲息深度範圍在310-640公尺，是深水型金鱗魚類。以底棲性的無脊椎動物為食。

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Ostichthys kaianus Ostichthys generoko animalia da. Arrainen barruko Holocentridae familian sailkatzen da.

卡伊岛骨鳂（学名：Ostichthys kaianus），又名白線骨鱗魚、深海骨鰃，为鳂科骨鳂属的鱼类，俗名开恩骨鳞鱼。分布于台湾恒春等南海到日本及印度洋以及台湾恒春等南海等，属于暖水性近底层海鱼。

Known from seamounts and knolls