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Siluriformes (Catfishes) >
Aspredinidae (Banjo catfishes) > Aspredininae
Etymology: Platystacus: Greek, platys = flat, broad + Latin, acus = needle (Ref. 45335).
More on author: Bloch.
Issue
See Mees (1987: 186) for detailed description. Friel (1994: 86) removed this species from Aspredo to preserve monophyly of that genus.
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水; 汽水性の 底生の; pH range: 6.8 - 8.2; dH range: 12 - 35. Tropical; 22°C - 25°C (Ref. 2060)
Central and South America: Venezuela to northern Brazil (including the lower portions of coastal rivers).
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 31.8 cm SL オス/雌雄の選別がない; (Ref. 36695); common length : 15.0 cm TL オス/雌雄の選別がない; (Ref. 5217)
Occurs mainly in brackish water. Found on soft bottoms of shallow turbid water near river mouths. Reported to migrate from estuary into freshwater, but actual spawning apparently takes place in brackish water (Ref. 6868). The species has a peculiar mode of egg incubation wherein the female banjo catfish carries the eggs firmly attached to the underside of the body. This seems to be an adaptation to facilitate the oxygenation of the eggs in muddy environments. Reproduction probably occurs during the earlier part of the year (Ref. 35381).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Females carry their eggs and young attached to the ventral surface of the body.
Friel, J.P., 2003. Aspredinidae (Banjo catfishes). p. 261-267. 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. 36695)
Human uses
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