分類 / Names
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Siluriformes (Catfishes) >
Auchenipteridae (Driftwood catfishes) > Auchenipterinae
Etymology: Trachelyopterus: Greek, trachelos = neck + greek, pteron = wing, fin (Ref. 45335).
More on author: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の; pH range: 6.0 - 7.5; dH range: ? - 18. Tropical; 20°C - 24°C (Ref. 2060)
South America: Widespread in northern South America.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 10.8 range ? - ? cm
Max length : 30.0 cm TL オス/雌雄の選別がない; (Ref. 115169); 23.0 cm TL (female); 最大公表体重: 675.00 g (Ref. 115169); 最大公表体重: 675.00 g; 最大記録サイズ: 3.00 年 (Ref. 35381)
背面の脊椎 (合計) : 1; 背鰭 (合計) : 5 - 6; 肛門の骨: 0; 臀鰭: 20 - 25. The body is stocky, the head a little depressed, the inferior jaw a little prognathous, the cephalic helmet covered with finely pigmented skin in adults, with a fontanelle shorter than the orbital diameter (Ref. 35381).
Occurs in swamps. Well-adapted to hypoxic environments, being able to survive for hours, emerged. Adults feed on small fishes, arthropods, worms and sometimes on fruits (Ref. 35381). The spiny structure of the pectoral fins enables the male to hold the females during mating (internal fertilization). Sperm can be kept in the female's genital tract for several months, owing to a gelatinous emission from the seminal vesicle of the male. At maturity, the size of the adhesive eggs (20% of the female's weight) is 3 mm. Nine days after hatching, alevin size is 1.5 cm and they feed on microscopic worms or small insects. At around 11 days, their negative phototropism pushes them to hide themselves under branches or rocks. Its pink flesh is highly appreciated by the local population (Ref. 27188).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Ferraris, C.J. Jr., 2003. Auchenipteridae (Driftwood catfishes). p. 470-482. 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. 37098)
IUCNのレッドリストの状況は (Ref. 130435: Version 2024-1)
Human uses
水産業: 少数商業の; 水族館・水槽: 商業
用具
特記事項
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インターネットの情報源
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=0.01479 (0.01176 - 0.01861), b=3.10 (3.03 - 3.17), in cm total length, based on LWR estimates for this species (Ref.
93245).
栄養段階 (Ref.
69278): 3.1 ±0.40 se; based on food items.
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (tmax=3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
