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淡水白鲳,学名短盖巨脂鲤,淡水可钓鱼种之一,原产南美亚马逊河,为热带和亚热带鱼类,是锯脂鲤亚科巨脂鲤属的一种,与俗称的“食人鱼”有较近的亲缘关系。外形类似于海水鲳鱼,侧扁成盘状,背较厚,口端位,无须。头部小,头长与头高相当。眼中等大,位于口角稍上方。尾分叉,下叶稍长于上叶。背部有脂鳍,背鳍起点与腹鳍略相对,体被小型圆鳞,自胸鳍基部至肛门有略呈锯状的腹棱鳞。体色为银灰色,胸、腹、臀鳍呈红色,尾鳍边缘带黑色。
Freshwater Pomfret, scientific name short cover giant fat carp, one of the freshwater fishing species, originating in the Amazon, South America, tropical and subtropical fish, is a kind of sawing carp subfamilies Giant Carp, and commonly known as the “ Piranha ”has a closer relationship. Shape similar to the sea bream, side flat into a disc, thick back, mouth position, no need. Head small, head length and head height quite. Middle-sized eyes, located slightly above the mouth. Tail bifurcation, lower leaves slightly longer than the upper lobe. Dorsal fat fins, dorsal fin starting point and the pelvic fins slightly opposite, the body is a small round scales, from the base of the pectoral fin to the anus a little saw-like ventral rib scales. Body color is silver gray, chest, abdomen, anal fin red, caudal fin with black.