分類 / Names
共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
; 新鮮な水 底生の漂泳性; pH range: 6.0 - 8.0; dH range: 4 - 25; potamodromous (Ref. 51243). Tropical; 20°C - 26°C (Ref. 2060); 11°N - 35°S, 85°W - 35°W
Central and South America: Costa Rica to Argentina in most rivers basins.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm ?, range 17 - ? cm
Max length : 65.0 cm TL オス/雌雄の選別がない; (Ref. 111518); 最大公表体重: 3.8 kg (Ref. 111518)
Occurs in diverse habitats from free flowing clear water streams, well up into the valleys, to slow turbid waters, water courses, irrigation and drainage ditches, and ponds on the plains (Ref. 11225). Rests in vegetation during the day and is active at night (Ref. 6858). Adults feed on fish; juveniles feed on crustacean and insect larvae (Ref. 26543), shrimps and other small invertebrates (Ref. 12225). Spawn in pits located in shallow water at a temperature of about 26°C (Ref. 205). Males guard the nests even after the eggs have hatched (Ref. 205). Reaches more than 3 kg (Mark Fitzgerald, pers. comm., 2001). Live fish are difficult to handle and potentially dangerous because of their sharp teeth, strong jaws, and slippery bodies.
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Eggs are fertilized in the cupped anal fin of the female. When the eggs get sticky, they are dropped into a pit which will be guarded by the male even until after the eggs have hatched (Ref. 205).
Planquette, P., P. Keith and P.-Y. Le Bail, 1996. Atlas des poissons d'eau douce de Guyane. Tome 1. Collection du Patrimoine Naturel Volume 22, MNHN, Paris & INRA, Paris. 429 p. (Ref. 12225)
CITES (Ref. 118484)
水産業: 商業; 水産養殖: 商業; 水族館・水槽: 公共の水族館
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00724 - 0.01048), b=3.12 (3.06 - 3.18), in cm Total Length, based on LWR estimates for this species (Ref. 93245
栄養段階 (Ref. 69278
): 4.5 ±0.0 se; Based on diet studies.
Generation time: 3.8 ( na - na) years. Estimated as median LN(3)/K based on 2 growth studies.
回復力 (Ref. 120179
): 低い, ４．５年～１４年の倍増期間の最小個体群 (K=0.08).
弱み (Ref. 59153
): Moderate vulnerability (36 of 100) .