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首页> 外文期刊>Bulletin of the National Museum of Nature and Science >A New Tilefish, Branchiostegus okinawaensis (Perciformes:Branchiostegidae), from Okinawa Island, Southern Japan
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A New Tilefish, Branchiostegus okinawaensis (Perciformes:Branchiostegidae), from Okinawa Island, Southern Japan

机译:来自日本南部冲绳岛的一种新的鳞鱼,名为Bokiostegus okinawaensis(Perciformes:Branchiostegidae)。

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摘要

A new tilefish, Branchiostegus okinawaensis, is described on the basis of 9 specimens collected from Okinawa Island, Ryukyu Islands, Japan. This species is easily distinguished from other congeners by the following combination of characters: 5-6 diagonal scale rows on cheek with 2 enlarged scales in the middle of row, its maximum diameter 2.2-3.0 in orbit diameter; scales on cheek not covered with skin; head length 3.0-3.3 in standard length; first dorsal-fin spine 1.7-2.3 in orbital diameter; second dorsal-fin spine 0.9-1.3 in orbit diameter; second pelvic-fin soft-ray longest; pelvic-fin length shorter than the longest dorsal-fin soft ray length (13th); longitudinal lateral-line scales 75-86; silvery cheek; a rectangular, dusky-yellow blotch on the fin membrane between first and third dorsal spines; upper half of caudal fin bright yellow and lower half greenish grey with 2 yellow stripes running horizontally from the middle of caudal peduncle to caudal-fin margin. It is known only from Okinawa Island on sandy to muddy bottoms of the type locality at depths of 100-200 m.
机译:根据从日本琉球群岛的冲绳岛收集的9个标本,描述了一种新的瓦科鱼,名为Bistiostegus okinawaensis。通过以下特征的组合,该物种很容易与其他同类动物区分开:脸颊上有5-6个对角线鳞片行,中间有2个放大的鳞片,其最大直径为轨道直径2.2-3.0;鳞屑不覆盖皮肤的脸颊;头部长度标准长度为3.0-3.3;第一背鳍脊柱的眼眶直径为1.7-2.3;第二条背鳍脊柱的轨道直径为0.9-1.3;第二骨盆鳍软射线最长;骨盆鳍长度短于最长的背鳍软射线长度(13th);纵向侧线刻度75-86;银色的脸颊在第一和第三背棘之间的鳍膜上有一个长方形的,灰黄色的斑点;尾鳍的上半部为明亮的黄色,而下半部为绿色的灰色,从尾柄的中部到尾鳍边缘水平延伸有2条黄色条纹。仅在冲绳岛上的砂质至浑浊的底部(在100-200 m的深度处为典型位置)才知道。

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