怀头鲇又名六须鲇、东北大口鲇,地方名叫怀子、怀头,是一种大型肉食性珍稀鱼类,自然水域已经很难捕到,目前已被列为濒危鱼类。近几年,怀头鲇人工繁殖技术取得了突破性进展,并且积累丰富的经验,使得该物种得到了有效保护。催产率、受精率、孵化率已分别达90%、85%、90%以上。但? Also known as the bearded head 鲇, northeast big mouth 鲇, the local name is a pendant, pregnant, is a large carnivorous rare fish, natural waters have been difficult to catch, has now been classified as endangered fish. In recent years, there has been a breakthrough in the artificially propagated capitula, and its rich experience has enabled the species to be effectively protected. Oviparous rate, fertilization rate, hatching rate have been 90%, 85%, 90%. but?