形態学データの Zaireichthys lacustris
検索表
Abnormalities
主な参照 Eccles, D.H., D. Tweddle and P.H. Skelton, 2011
Appearance refers to
Bones in OsteoBase

性別の特性

専門の臓器
異なる出現
異なる色
意見

大人と子供の特性に関する記述

目立つ特徴
身体の側面 elongated
横断面
後頭部の側面
目の種類
目/鼻の種類
口の場所 sub-terminal/inferior
Type of scales
診断

Diagnosis: This species is distinguished from all other members of the genus by the short snout, which is less than one third of the head length, and by its unique habitat, occupying empty snail shells in the lake (Ref. 86935).

Description: Lateral line short, reaching about to base of pelvic fins; skin minutely granular (Ref. 86935). Head broader in relation to standard length than in all other species of Zaireichthys, depressed, with narrow supra-occipital process almost as long as interorbital width and nearly reaching basal shield of first dorsal spine; snout broadly rounded, scarcely projecting beyond upper lip; eyes relatively large; mouth small, less than half head width; barbels relatively short, the maxillary reaching to about base of pectoral fin and bearing a posterior fringe for the basal third; humeral process pointed, proportionally longer than in all other species of Zaireichthys except Z. kafuensis (Ref. 86935). Dorsal fin II,4-5, base of first spine about level with end of humeral process and base of fin short; adipose fin moderately long, with posterior end almost vertical, not reaching procurrent caudal rays; caudal fin truncate or slightly emarginate, with 4-6 branched rays in the upper lobe and 5-7 in the lower, usually with a total of 11 branched rays, preceded by 14-16 procurrent rays; anal fin with 9-11, usually 10, soft rays, the first 3-5 simple; pectoral fins rounded posteriorly with 6-7 branched rays, the spine bearing 4-7 stout barbs above the fin membrane; pelvic fins short, usually ending level with origin of adipose (Ref. 86935). Premaxillary tooth patch shaped like mirror-image commas; teeth caniniform in 5-6 rows, the outer with about 6 and the inner with about 14 teeth on each side; lower jaw with 3-4 rows of 14-16 teeth on each side, the outer teeth largest (Ref. 86935).

Colouration: Almost transparent in life, with three horizontal darker blotches and with head mottled (Ref. 86935). Preserved specimens pale, with light brown marbling on nape and shoulders, a series of about ten faint brown blotches dorsally, about ten mid-lateral blotches, the posterior of which are more elongated, and darker patches above bases of pelvic fins, above anal fin and at base of caudal fin (Ref. 86935).

Ease of Identification

対称特性の Zaireichthys lacustris

側線 中断された: No
側線ラインの長さ
Pored lateral line scales
Scales in lateral series
側線ラインより上の規模
側線ラインより下の規模
側線(尾鰭付近)周囲の規模
ひげ
鰓(サメ/エイのみ)
鰓篩
下部のヒレに
上部のヒレの上に
合計
脊つい
肛門前方の
合計

背面のヒレ

属性 no striking attributes
鰭の数 1
小離鰭の数 Dorsal   
Ventral  
脊椎の合計 2 - 2
全体の鰭 4 - 5
脂びれ present

尾びれ

属性 more or less truncate

肛門のひれ

鰭の数 1
脊椎の合計 0 - 0
全体の鰭 9 - 11

対ひれ

胸の 属性  more or less normal
脊椎     1
鰭   6 - 7
骨盤の 属性  more or less normal
場所    abdominal  before origin of D1
脊椎     
鰭   
主な参照 (例 9948)
用語集 ( 例 cephalopods )
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