于2007年7月～2009年6月，在北江随机采集侧条光唇鱼 （Acrossocheilus parallens）样本358尾，均测量其体长（L）、体重（W），净体重（Wn）和性腺重（Wo）等生物学指标.从样本中选取卵巢成熟度为IV期的雌性个体73尾，用重量法计数个体绝对生殖力，并对体长相对生殖力（FL）、体重相对生殖力(FW )进行计算，用5种数学模型及多元回归方程拟合个体生殖力与生物学指标的关系.
There were 358 specimens of Acrossocheilus parallens collected between July 2007 and June 2009 in the Beijiang River. The data for body length （L）, body weight （W）, net body weight （Wn）, ovary weight （Wo） were measured, and the gonadosomatic index and the fullness were calculated. The individual fecundity of 73 female of the total specimens which ovaries at stage Ⅳ and the relationship between the individual fecundity and the biological indexes were studied from July 2007 to June 2009. The relationship between individual absolute fecundity (F) and total length, standard length，body weight，net body weight and ovary weight was described by power equation, and the relationship between F and gonadosomatic indexes, age was regressed best by exponential equation. The individual relative fecundity of body length (FL) was significantly correlated to total length, body length，body weight，net body weight,ovary weight, gonadosomatic indexes and age. Both of F and FL had no obvious relationship with fullness. The FW is not significantly correlated to all the biological indexes. The distribution of egg-diameter in Ⅲ and Ⅳ maturity stage ovary implicated that A.parallens spawns in batches.