分类 / Names
Common names from other countries
主要参考文献
大小 / 重量 / 年龄
Max length : 54.2 cm TL 雄鱼/尚未辨别雌雄; (Ref. 79585); 最大体重: 1.3 kg (Ref. 40637)
Length at first maturity
Lm 23.2 range ? - ? cm
环境
; 淡水 居于水底的; pH range: 6.5 - 7.8; dH range: ? - 20
气候 / 范围
23°C - 30°C (Ref. 1672), preferred ?; 8°N - 11°S
分布
South America: Amazon, Orinoco, Paraná and Parnaíba River basins. Syntopic with S. elongatus in the Orinoco basin and with S. elongatus and S. maniradii in the upper Amazon drainage of Brazil, Ecuador, Peru, and Bolivia (Ref. 57983).
国家 | FAO区域 | 生态系 | 标本纪录 | 简介
简单描述
背棘 (总数): 2; 背的软条 (总数): 6; 臀鳍软条: 19 - 22. Distinguished from S. elongatus by having modally 9 pectoral rays; 21 anal-fin rays; 16 gill rakers; large vomerine tooth patches, almost always fused; a more robust, deeper head and body; body somewhat compressed laterally; mental barbels equal or anterior to gular apex. Differs from S. cuspicaudus in having rounded caudal fin lobes and more robust body; from S. trigonocephalus by premaxillary tooth patch length being 1.5 to 2.5 times its width; trenchantly differs from S. maniradii in having only 13-18 gill rakers. Additionally, other distinguishing characters include, pelvic fins that contact or nearly reach anal fin origin when depressed and presence of thin plates or ossicles (highly variable in shape) extending vertically on anterior lateral line in most large adults (Ref. 57983).
人类利用
渔业: 低经济; 水族馆: 商业性
更多信息
参考文献养殖养殖信息品种遗传学基因序列遗传率疾病加工Mass conversion
合作者照片Stamps, Coins声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
工具
特别资料
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网络资源
Estimates of some properties based on models
Phylogenetic diversity index
PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
营养阶层
4.1 ±0.71 se; Based on food items.
回复力
中等的, 族群倍增时间最少 1.4 - 4.4年 (K=0.27)
脆弱性
Moderate vulnerability (39 of 100)
价格分类
