【摘要】 胭脂鱼幼鱼具有明显的昼夜摄食节律.仔鱼以适口的浮游动物为食,并随着口位下移,转而摄食底层生物.文中分别对140日幼鱼的日龄与全长、全长与体重以及全长和全长/体高的关系作了曲线回归方程,反映了幼鱼的生长特点.本工作为增殖该种珍稀鱼类资源提供了基础资料,并对其观赏价值进行了评价.更多还原

【Abstract】 The fry of Chinese Sucker exhibit an apparent feeding regularity during the day and night. They eat zooplankton suitable for their mouth size and bottom food in turn.with lowering of mouth.Three regression equations,including the relations between daily age and total length, total length and weight,total length/body depth and total length,were caculated for discribing growth characteristics of young sucker raised 140 days.This work provids the biological basis for the recruitment of the rare fish resources.Moreover,its ornamental value was evaluated.更多还原