形態學資料 Stolephorus holodon
檢索表
Abnormalities
主要參考文獻 Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988
形態描述的性別
Bones in OsteoBase

性別內容

特殊器官 no special organs
不同的外表 males alike females
不同的顏色 males alike females
附註

稚魚與成魚的特徵描述

顯著的特徵 none
側面體型 elongated
橫切面 compressed
頭部背面描繪 clearly convex
眼的類型 more or less normal
口/吻尖的類型 more or less normal
口的位置 sub-terminal/inferior
Type of scales cycloid scales
鑑別

Diagnosis: Body somewhat compressed, belly with 6-8 small needle-like pre-pelvic scutes, no post-pelvic scutes; maxilla tip pointed, reaching to or beyond hind border of pre-operculum, the latter concave, indented near maxilla tip; lower gillrakers 24-29; anal fin short, usually with 3 unbranched and 17-20 branched finrays, its origin below about middle of dorsal fin base (Ref. 189, 5430). Of similar species in its distribution area, Stolephorus indicus is round-bodied and has a shorter maxilla, not to hind border of pre-operculum; and Encrasicholina punctifer has the anal fin origin behind the dorsal fin base (Ref. 189).

Description: Body somewhat compressed; depth of body 5.0-5.5 times in total length; head length 23-26% of standard length (Ref. 1881, 5430, 122132). Snout pointed, strongly projecting, shorter than the eye; eye diameter 3 times in head length; teeth present in both jaws, minute; maxillary tapering behind, extending to the gill-opening (Ref. 1881, 5430). Lower gill rakers 24-29; upper gill rakers 17-22 (Ref. 5430, 122132). Dorsal fin with 3 unbranched and 12-14 branched rays, originating a little nearer root of caudal fin than end of snout; anal fin with 3 unbranched and 17-20 branched rays, originating below middle of dorsal fin; pectoral fin with 1 unbranched and 11-13 branched rays; pelvic fin with 1 unbranched and 6 branched rays; caudal fin deeply forked (Ref. 189, 1881, 5430). Caudal peduncle twice as long as deep (Ref. 1881). Scales: 38-42 scales in a longitudinal series, 9 in a transverse series (Ref. 1881, 5430). Pre-pelvic scutes 6-8, no post-pelvic scutes (Ref. 5430).

Colouration: A silvery lateral stripe is present along flanks (Ref. 1881, 5430).

鑑定難易度

分節特性 Stolephorus holodon

側線 打斷: No
側線上的鱗片 38 - 42
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 0
鰓裂 (僅限於鯊魚/ 魟魚)
鰓耙
在下肢上 24 - 29
上枝鰓耙 17 - 22
總數
脊椎骨
肛門前
總數

背鰭 (s)

屬性 no striking attributes
鰭數 1
離鰭號碼 Dorsal   
Ventral  
棘總數 0 - 0
軟條總數 15 - 17
脂鰭 absent

尾鰭

屬性 forked; more or less normal

臀鰭 (s)

鰭數 1
棘總數 0 - 0
軟條總數 20 - 23

偶鰭

胸鰭 屬性  more or less normal
脊椎     0
軟條   12 - 14
骨盤的 屬性  more or less normal
位置    abdominal  before origin of D1
脊椎     0
軟條   7 - 7
主要參考文獻 (例如 9948)
字彙 ( 例如 cephalopods )
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