比目鱼类,包括鲆、鲽、鳎三类,是底栖食肉性、冷温型海洋鱼类,由于这些鱼类肉质细腻、口感鲜嫩、营养丰富、污染较少,深受市场欢迎,加上这类鱼性情较为温顺,游泳速度较慢,也就成为海水养殖的主要对象。塘沽区自1999年试养褐牙鲆成功后,随着其它品种的引进和苗种培育的逐个突破, Flounder, including flounder, 鲽, 鳎 three categories, is benthic carnivorous, cold type of marine fish, as these fleshy fish, taste fresh, nutritious, less pollution, welcomed by the market, coupled with such Fish temperament is more docile, swimming slower, it has become the main target of mariculture. Tanggu District, since the trial of avocado flounder success in 1999, with the introduction of other varieties and seed breed one by one breakthrough,