形態學資料 Bostrychus microphthalmus
檢索表
Abnormalities
主要參考文獻 Hoese, D.F. and M. Kottelat, 2005
形態描述的性別
Bones in OsteoBase

性別內容

特殊器官
不同的外表
不同的顏色
附註

稚魚與成魚的特徵描述

顯著的特徵
側面體型 fusiform / normal
橫切面
頭部背面描繪
眼的類型
口/吻尖的類型
口的位置
Type of scales
鑑別

Differs from other species of the genus by possessing reduced eyes covered with skin and reduced head canal development, body pigment and head squamation. Distinguished by the combination of the following characters: eye minute, covered with skin; vomer with a patch of teeth conical and short, with pointed tips, arranged in 5-6 rows in an inverted V; palatine without teeth; head pores present, lateral canal tube above operculum and preoperculum reduced, absent or confined to a short detached tube above preoperculum and/or a short tube above operculum; predorsal scales cycloid, reaching forward to near anterior end of snout; operculum with small embedded cycloid scales; side of head covered with embedded scales, except for below and before anterior margin of eye; no scales on interoperculum or branchiostegal membranes; gill opening extending forward to below a point 2-3 eye diameters before posterior preopercular margin (to just before margin in one specimen); first dorsal-fin pterygiophore formula 4 (12211) in 2 or 3 (131111) in 2, last 2-3 pterygiophores without spines; vertebrae 14-15 + 15-16 = 29-30; body pale, with few melanophores along margins of scales on dorsal surface of body (Ref. 55841).

Description: First dorsal fin spines 5, 6; second dorsal fin I,10-12 (Ref. 55841).

鑑定難易度

分節特性 Bostrychus microphthalmus

側線 打斷: No
側線上的鱗片
側線上鱗片數
側生系列的鱗片
側線上的鱗片列
側線下的鱗片列
尾梗周圍的鱗片
觸鬚
鰓裂 (僅限於鯊魚/ 魟魚)
鰓耙
在下肢上
上枝鰓耙
總數
脊椎骨
肛門前 14 - 15
總數 29 - 30

背鰭 (s)

屬性
鰭數 2
離鰭號碼 Dorsal   
Ventral  
棘總數
軟條總數
脂鰭 absent

尾鰭

屬性 more or less truncate; more or less normal

臀鰭 (s)

鰭數
棘總數 1 - 1
軟條總數 9 - 10

偶鰭

胸鰭 屬性  
脊椎     
軟條   15 - 17
骨盤的 屬性  
位置    
脊椎     1
軟條   5 - 5
主要參考文獻 (例如 9948)
字彙 ( 例如 cephalopods )
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