泥鳅,古称、鳛,淡水可钓鱼种之一,属鳅科。我国南方各地均有分布,北方不常见,但也分布各地。泥鳅体细长,前段略呈圆筒形。后部侧扁,长约10余厘米。头尖,无鳞。眼小,无眼下刺。体鳞细小,侧线完全。口小、下位,马蹄形,有须5对。鳞极其细小,圆形,埋于皮下。体背部及两侧灰黑色,全体有许多小的黑色斑点,头部和各鳍上亦有许多黑色斑点,背鳍和尾鳍膜上的斑点排列成行,尾柄基部有一明显的黑斑。其他各鳍灰白色。腹部淡黄色或白色。泥鳅皮下粘液腺发达,体表黏液丰富。喜栖息于静水的底层或多富有腐殖质的淤泥表层,对环境适应力 Loach, the ancient name, 鳛, one of the freshwater fishing species, is a family Taxicida. All over southern China are distributed, not common in the north, but also distributed around. Loach slender, slightly cylindrical before the paragraph. Lateral flat side, about 10 cm long. Tip, no scales. Small eyes, no eye under thorn. Body scales small, completely lateral line. Small mouth, lower, horseshoe, there are 5 pairs. Scales are extremely small, round, buried under the skin. There are many small black spots on the back of the body and on both sides. There are many black spots on the head and on each fin. The spots on the dorsal and caudal fins are arranged in rows and the base of the caudal peduncle has a distinct dark spot. Other fins are gray-white. Abdomen light yellow or white. Loach subcutaneous mucus gland developed surface mucus rich. Hi habitat in the bottom of still water or more humus-rich silt surface, adaptability to the environment