分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Loricariidae (Armored catfishes)
甲鯰科 (Armored catfishes) > Hypostominae
Etymology: Ancistrus: Greek, agkistron = hook (Ref. 45335); jataiensis: The specific name jataiensis is derived from Jatai, the name of the only river where the species was found..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
South America: known only from the type locality, a small tributary of the rio Vermelho, upper Tocantins basin in Brazil.
南美洲: 在巴西已知只來自模式標本產地， rio Vermelho 的一個小支流 Tocantins 流域上游了。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 5.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 54498)
簡短描述
型態特徵 | 形態測量圖
背的軟條 (總數): 8; 臀鰭軟條: 5; 脊椎骨: 28. Distinguished from all congeners except Ancistrus tombador and A. reisi by the absence of an adipose fin. Adipose fin is replaced by a series of 2 to 4 median unpaired platelets forming a low crest. These platelets are nearly immediately followed by the plate-like procurrent caudal rays, while in A. tomabador these are followed by at least two lateral plates that join dorsally before the procurrent caudal rays. It further differs from A. tombador by the following characters: snout with naked margin generally ill-delimited by posterior dermal plates which are irregular in size and shape and rarely joined together; tentacles present, some branched in larger males; body wider (cleithral width 33.6-35.6% SL, mean 34.9) and caudal peduncle depth 10.1-10.7% SL, mean 10.4. Differs from A. reisi by the following morphometric characters: predorsal length (47.5-49.3% SL, mean 48.1, vs. 43.8-46.4% SL, mean 44.9), occipital depth (17.0-19.5% SL, mean 18.1, versus 14.9-17.0% SL, mean 16) and caudal peduncle length (24.6-27.1% SL, mean 26.3, vs. 27.7-30.9%SL, mean 28.7) (Ref. 54498).
除了 Ancistrus tombador 與 A. reisi 藉由缺少一個脂鰭以外與所有的同類區分了。 脂鰭被形成一個低的冠的一系列的 2 到 4個中央的不成對的小板取代。 這些小板緊鄰幾乎被跟隨著板狀的前流尾部的鰭條而在 A. tomabador 中這些被跟隨著至少二個背面在前流的尾部鰭條之前結合的側骨板。 它進一步在特徵之後有別於 A. tombador 藉由: 吻部有通常有害界定的裸露的邊緣藉著在後部真皮板那是不規則的在大小與形狀中而且很少地一起結合; 觸鬚呈現, 在較大的雄性中的一些分枝; 身體比較寬的 (匙骨寬度 33.6-35.6% SL, 平均的 34.9) 與尾柄深度 10.1-10.7% SL, 意謂 10.4. 在型態特徵的特徵之後有別於 A. reisi 藉由: 前背的長度 (47.5-49.3% SL, 平均的 48.1, vs.43.8-46.4% SL, 平均的 44.9), 後頭骨深度 (17.0-19.5% SL, 平均的 18.1, 對 14.9-17.0% SL, 平均的 16) 與尾柄長度 (24.6-27.1% SL, 平均的 26.3, vs.27.7-30.9%SL, 意謂 28.7).(參考文獻 54498)
描述: D i,7; P i,6; V i,5; A i,4; C i,14,i.(參考文獻 54498)
Facultative or obligate air-breathing (Ref. 126274)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在巴西已知只來自模式標本產地， rio Vermelho 的一個小支流 Tocantins 流域上游了。
Fisch-Muller, S., A.R. Cardoso, J.F.P. da Silva and V.A. Bertaco, 2005. Three new species of Ancistrus Kner (Teleostei: Siluriformes: Loricariidae) from the upper Tapajós and Tocantins rivers. Rev. Suisse de Zoologie 112(2):559-572. (Ref. 54498)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.00580 - 0.02997), b=2.98 (2.80 - 3.16), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
