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: Megalancistrus: Greek, megas, megalos = great + Greek, agkistron = hook (Ref. 45335).
More on author: Peters.
Issue
New combination. After examination of the holotype of Pterygoplichthys (Ancistrus) parananus, it is clearly established that Chaetostoma aculeatus belong to the same species and therefore is a junior synonym of this species. Redescription in Pignalberi (1970: 379).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 溫帶
South America: Paraguay, Paraná and Uruguay River basins.
南美洲: 巴拉圭， Parana 與烏拉圭河流域。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 17.5 range ? - ? cm
Max length : 58.8 cm SL 雄魚/尚未辨別雌雄; (Ref. 56003)
Facultative air-breathing in the genus (Ref. 126274)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 巴拉圭， Parana 與烏拉圭河流域。
Fisch-Muller, S., 2003. Loricariidae-Ancistrinae (Armored catfishes). p. 373-400. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36713)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 21 November 2020
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.01170 - 0.03102), b=3.01 (2.88 - 3.14), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
回復力 (Ref.
120179): 非常低的, 最小族群倍增時間超過14 年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (49 of 100).
