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) >
Callichthyidae (Callichthyid armored catfishes)
美鯰科 (Callichthyid armored catfishes) > Corydoradinae
Etymology: Corydoras: Greek, kory = helmet + greek, doras = skin (Ref. 45335); difluviatilis: From the Latin di meaning two, and fluviatilis meaning from the river, in allusion to the occurrence of the species in two major drainage basins of the Neotropics (Ref. 46825).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
South America: Brazil.
南美洲: 巴西。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 4.7 cm SL 雄魚/尚未辨別雌雄; (Ref. 46825)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 1; 背的軟條 (總數) : 6 - 8; 臀棘: 0; 臀鰭軟條: 8 - 10. Differentiated in having serrations of posterior borders of pectoral spine restricted to proximal half of spine, and parapophyses of fourth free vertebra reduced, separated from each other, and not fused into haemal arch (Ref. 46825).
鑑別特徵是有胸棘的後緣的鋸齒侷限於而不是被融合成脈弓的近端一半的棘, 與被與彼此分開的第四個分離的縮小脊椎骨的椎體橫突了.(參考文獻 46825)
Facultative air-breathing (Ref. 126274); Diurnal, found singly or in pairs (Ref. 46825).
日行性, 各別地或成對發現。 (參考文獻 46825)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 巴西。
Britto, M.R. and R.M.C. Castro, 2002. New Corydoradine catfish (Siluriformes: Callichthyidae) from the upper Paraná and São Francisco: the sister group of Brochis and most of Corydoras species. Copeia 2002(4):1006-1015. (Ref. 46825)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 07 November 2018
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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=0.00741 (0.00286 - 0.01921), b=3.14 (2.91 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
