分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Crenuchidae (South American darters) > Crenuchinae
Etymology: Crenuchus: Greek, krenoychos = the God of running waters.
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性; pH range: 5.5 - 6.5; dH range: ? - 5. 熱帶; 24°C - 28°C (Ref. 1672)
South America: Orinoco and Amazon River basins; and coastal rivers in the Guianas.
南美洲: 在圭亞那中的 Orinocoo 與亞馬遜河流域與沿海的河川。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 5.7 cm TL 雄鱼/尚未辨别雌雄; (Ref. 37059)
Little is known of its biology in its natural environment. Unlike most Characoids, this species is typically solitary and territorial. The dimensions of the mouth confirms its predatory habits. Its food consists mainly of Ephemeroptera larvae, copepods and ostracods. In the aquarium, only the male guards the spawned eggs. About a hundred eggs are deposited on the substrate and dispersed by the male (Ref. 12225). Reproduces by laying eggs on stones or submerged leaves (Ref. 27188).
它的自然环境的它的生物学特性少为人知。 不像大多数的脂鲤类，这种典型独居性的与具有领域性。 嘴巴的尺寸确定它的掠食性习惯。 它的食物主要地蜉蝣仔鱼，桡脚类的动物与介形虫组成。 在水族馆，只有雄鱼保卫鱼卵。 一百卵被沈淀在底部上面而且散布藉由大约雄鱼.(参考文献 12225) 藉由在石头或水下的树叶上产卵繁殖。 (参考文献 27188)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 在圭亞那中的 Orinocoo 與亞馬遜河流域與沿海的河川。
Planquette, P., P. Keith and P.-Y. Le Bail, 1996. Atlas des poissons d'eau douce de Guyane. Tome 1. Collection du Patrimoine Naturel Volume 22, MNHN, Paris & INRA, Paris. 429 p. (Ref. 12225)
人类利用
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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=0.01175 (0.00447 - 0.03086), b=3.08 (2.86 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.42 se; based on food items.
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Fec=60).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
