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六须鲶又名怀头鲶,是黑龙江及其支流水系中肉食性大型经济鱼类,常见体重3-8千克,最大个体可达100千克。此鱼适应性强,易饲养,生长快,易捕捞,肉质丰厚,细嫩可口,具有较大的经济价值,现已在不少地区推广开来。一、生物学特性1.形态特征:该鱼无鳞,侧线贯穿体侧正中,头扁而阔,眼小口大,下颌显著突出,触须三对,上颌须一对,甚长;下颌须两对,易断。体色多为淡黄色或灰褐色,有不规则的暗色斑块,胸部白色,胸鳍刺弱,无锯齿,胸鳍基部各有一个粘液孔,受刺激时能分泌大量粘液。
Catfish Catfish, also known as pregnant catfish, is a large carnivorous fish economy in Heilongjiang and its tributaries, common weight 3-8 kg, the largest individual up to 100 kg. This fish adaptability, easy feeding, fast growth, easy fishing, meat rich, delicate and delicious, with greater economic value, has now been promoted in many areas. First, the biological characteristics 1. Morphological characteristics: The fish without scales, the side line through the median side of the body, head flat and wide, small eye small mouth, jaw prominent, three pairs of tentacles, the upper jaw to be a pair of very long; jaw to be two pairs , Easily broken. Body color and more light yellow or gray brown, irregular dark patches, chest white, pectoral weakening, no sawtooth, pectoral fin base each have a mucus hole, stimulated by the secretion of a large number of mucus.