形態學資料 Pseudoscopelus aphos
檢索表
Abnormalities
主要參考文獻 Prokofiev, A.M. and E.I. Kukuev, 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 elongated
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

Diagnosis: Differs from its congeners in having complete absence of photophores and other luminescent formations (Ref. 56658).

Description: D1 VIII; D2 II, 23; A II, 22; P 15 (I, 14); V I 5; C x I, 8 + 7, xi; LL 71; vertebrae about 36 (after prolonged storage in formalin, the bones of the holotype strongly decalcinated and the vertebrae of the anterior half of the vertebral column were poorly discernible). Body elongated, narrowing towards caudal peduncle; greatest body depth about 7.3 times SL. Length of caudal peduncle 1.7 times longer than its least depth. Head of moderate size, about 3.5 times SL. Snout 3.4 times head length (HL), noticeably longer than diameter of a rather small orbit, which is 8.2 times HL. Interorbital space about 3.2 times HL. Mucous pit dumbbell-like, opens outside by 3 pores along its posterior edge, of which the middle pore almost twice as large as marginal pores. The bones of head are solid with skin covering them rather thick. Emargination of anterior tip of snout between symphyseal ends of praemaxilla is narrow and poorly developed; antero-dorsal angles of praemaxillaria only slightly protruding. Posterior end of praemaxillare and maxillare bent at 20° to longitudinal axis of the bone; toothed surfaces of praemaxillaria situated at an angle to horizontal body plane. Jaws are equal in size. Praeoperculum at left side fully hidden in skin, at right side its angular margin just slightly protrudes outside. Opercular lobe is well-developed, upper-posterior edge of operculum without emargination. The tongue is long and without teeth. Gill rakers are like small spines, longer than in other examined species of this genus (Ref. 56658).

鑑定難易度

分節特性 Pseudoscopelus aphos

側線 打斷: No
側線上的鱗片 71 - 71
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
總數

背鰭 (s)

屬性
鰭數 2
離鰭號碼 Dorsal   
Ventral  
棘總數 10 - 10
軟條總數 23 - 23
脂鰭

尾鰭

屬性

臀鰭 (s)

鰭數
棘總數 2 - 2
軟條總數 22 - 22

偶鰭

胸鰭 屬性  
脊椎     1
軟條   14 - 14
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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