分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Lebiasinidae (Pencilfishes) > Lebiasininae
Etymology: hoffmannorum: Named for Peter Hoffmann..
More on authors: Géry & Zarske.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性. 熱帶
South America: Mazaruni River, Guyana.
南美洲: 蓋亞那。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 6.1 cm SL 雄鱼/尚未辨别雌雄; (Ref. 47610)
背棘 (总数) : 2; 背的软条 (总数) : 8; 臀鳍软条: 9 - 10. Elongated body (greatest depth 4.60-5.45 in SL) with a narrow caudal peduncle; symmetrical caudal fin and a dorsal fin far backward. Transverse scales from dorsal to pelvic, 6 or 6.5; predorsal scales 15.5 or 16. Mouth somewhat superior with a short maxilla (apparent length 4.5-5.5 in HL), not quite reaching the level of the eye's front margin. Eyes relatively large. A longitudinal black band surmounted by a light line, from opercle to base of middle caudal rays (Ref. 47610).
延长的身体 (最大的高度 4.60-5.45 分之一标准体长) 具有一个狭窄的尾柄; 对称的尾鳍与一个背鳍远的向后地。 横跨的鳞片从背部的对腹鳍,6 或 6.5; 前背的鳞片 15.5 或 16. 嘴略微上方的具有一个短的颚骨 (明显的长度 4.5-5.5个 HL比率), 不完全达到眼的在前面的边缘的水平。 眼相当大的。 从鳃盖到中央尾部的鳍条的基底,一条纵向的黑色条纹顶上有一条淡的线了。 (参考文献 47610)
A shy species (probably the most timorous pencil-fish species), living mainly on the surface and hidden, when possible, under a floating leaf or other hiding possibility. Swims actively, in a fitful manner, the moving of the pectorals is alternative, not symmetric. In captivity, accepts all foods, including dry ones, but only on the surface, neglecting what falls on the bottom. No peculiar nocturnal coloration; no direct courtship was yet observed, only short hunts against each other (within and between sexes) without real fights (Ref. 47610).
一个害羞的种 (可能最胆怯的铅笔-鱼的种), 生活主要在表面与隐藏的, 当可能的时候,在一片漂浮的叶或其他的藏可能性下面。 以断断续续的方法, 活跃地游动,胸鳍的移动是交替的, 不是对称。 在繁殖场, 接受包括乾的一些所有的食物但是只有在表面上，忽略落在底部的东西。 没有特殊的夜行色; 没有直接的求偶期仍然被观察, 没有真正的战斗只短暂的争斗对抗彼此 (同性或异性间).(参考文献 47610)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 蓋亞那。
Géry, J. and A. Zarske, 2002. Derhamia hoffmannorum gen. et sp. n. - a new pencil fish (Teleostei, Characiformes, Lebiasinidae), endemic from the Mazaruni River in Guyana. Zool. Abh., Staat. Mus. Tierk. Dresden (52):35-47. (Ref. 47610)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00234 - 0.01555), b=3.09 (2.87 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
