分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Cetopsidae (Whale catfishes) > Cetopsinae
Etymology: Cetopsidium: From Cetopsis, the first genus proposed in subfamily Cetopsinae, and 'idium' meaning diminutive, referring to the relatively small body sizes of the members of the genus; ferreirai: Named for Efren J.G. Ferreira of the Instituto Nacional de Pesquisas da Amazonia (INPA), in recognition of his contributions to the knowledge of the fishes of the Brazilian Amazon.
Eponymy: Dr Efrem Jorge Gondim Ferreira (d: 1954) is a Brazilian ichthyologist, who is a Senior Researcher III at Instituto Nacional de Pesquisas da Amazônia, Manaus, and Professor of the Postgraduate Programme in Fresh Water Biology and Inland Fisheries. [...] (Ref. 128868), visit book page.
More on authors: Vari, Ferraris & dePinna.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 热带
South America: Rio Trombetas, left bank tributary of the lower rio Amazonas, Brazil.
南美洲: Rio Trombetas, 下面 rio Amazonas 巴西离开了浅堆支流。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 3.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 56045)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 5 - 6; 臀鳍软条: 23 - 24; 脊椎骨: 39 - 40. Distinguished from all its congeners, possibly except for Cetopsidium roae and C. minutum, by lacking distal filaments on the first rays of the dorsal and pectoral fins in adults males. Differs from C. minutum in the length of the pelvic fin by not reaching anal-fin origin. Further differs from C. morenoi in the overall form of the head, being not massive proportionally as a consequence of the less extensive development of the adductor mandibulae muscle onto the dorsal surface of head and with the snout distinctly rounded, and the less extensive dark pigmentation on the body (near absence of dark pigmentation on the lateral surface of body and the pigmentation limited to the middorsal region of body). Differs from C. orientale in the alignment of the dorsal and ventral profiles of the portion of the body posterior of the base of the dorsal fin (profiles converging posteriorly) and in the overall coloration (limited dark pigmentation located largely along the middorsal region of the body). Distinguished from C. pemon by having profile of head anteriorly rounded and by having proportional length of the snout, approximately 2 times diameter of the eye. Differs from C. roae in the position of the vent, proximate to the base of the anterior most anal-fin ray (Ref. 56045).
与它所有的同类区分了, 可能地除了 Cetopsidium roae 与 C. minutum, 借着缺乏末梢部的丝状突起在背部与胸鳍的第一个鳍条上当成鱼时雄性。 在不达成的臀鳍起源的腹鳍的长度中有别于 C. minutum 。 进一步有别于 C. morenoi 在那整体形式的头部, 不大的存在头部的背部表面之上比例地作为一个内转肌下颚肌肉的比较不广泛发展的结果而且与吻部明显地圆的, 与在身体上的比较不广泛深色的颜色.(靠近在身体的侧面表面上缺乏深色的顏色與顏色僅限於身體的背面中央區域了) 有別於在背部的對準中的 C. orientale ，而且身體的部分的腹面輪廓背鰭基底 (輪廓向後聚攏) 後面與在整體的顏色中.(主要地被設置的有限制的深色顏色沿著身體的背面中央區域) 與 C. pemon 藉著具有頭部的輪廓區分了前面圓形的而且藉著具有吻部的比例長度, 大約兩倍眼的直徑。 有別於在排洩孔的位置中的 C. roae, 靠近最前面臀鰭鰭條的基底.(參考文獻 56045)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: Rio Trombetas, 下面 rio Amazonas 巴西离开了浅堆支流。
Vari, R.P., C.J. Ferraris Jr. and M.C.C. de Pinna, 2005. The neotropical whale catfishes (Siluriformes: Cetopsidae: Cetopsinae), a revisionary study. Neotrop. Ichthyol. 3(2):127-238. (Ref. 56045)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
临近濒危 (NT) (B1a); Date assessed: 07 November 2018
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00207 - 0.01214), b=3.14 (2.93 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
