魚的蛋白质和脂肪含量丰富,营养价值高,但是腐烂变坏的魚,吃了就容易生病。怎样鉴別魚是否新鮮呢? 新鮮的魚,拿起来挺直(軟骨魚除外),用手指按下去,发硬而有彈性,魚鱗平滑有光澤,表面复有一层透明的粘液,口紧閉,眼睛透明凸出,鰓盖内鰓肉鮮紅色,肛門内縮。若将魚放入水中,会很快下沉。如果魚体弯曲下垂,用手按下去彈性小,外表失去光澤,魚鱗顏色混浊,口微开,眼珠凹陷,暗淡无光,鰓紅褐色,肛門微脹发紅,放在水中不易沉底,說明魚不够新鲜了。用大火燉煮熟透, Fish is rich in protein and fat, and has high nutritional value. However, fish that are rotted and deteriorated are prone to illness. How to identify if the fish is fresh? Fresh fish, pick up straight (except for cartilaginous fish), press down with your fingers, hair hard and elastic, smooth and shiny scales, the surface of a layer of transparent mucus, mouth tightly closed, The eyes are transparent and protruding, the bright red in the lid and the anus shrinks. If the fish is put into water, it will sink quickly. If the fish bends downwards, press it with hand to reduce the elasticity, the appearance is dull, the scales are turbid, the mouth is slightly open, the eyeballs are sag, dull and dull, the blush is red-brown, the anus slightly swells, and it is not easy to sink in the water, indicating fish Not fresh enough. Stew over the fire,