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本文报道了1966年拦截东辽河干流而成的二龙山水库的(歺又鱼)鱼生物学特性。内容包括形态变异、年龄与生长、食性、繁殖及渔获物群体组成。二该山水库蟹鱼体长,体重关系式W=0.004487L~(3·6153)是主要以枝角类和植物碎屑为主的杂食性鱼,但不同季节食物组成也有差异。二龄即达性成熟;雌雄性比为1.1:1;个体繁殖力15,346—40,257粒。群体由1—5龄5个年龄组组成;14—16cm体长组的个体为主要捕捞对象,占整个(歺又鱼)鱼渔获量60％,(歺又鱼)鱼是二龙山水库主要小型经济鱼类。
This article reports on the biological characteristics of the fish (cichlid fish) from Erlongshan Reservoir, which was formed in 1966 to intercept the main Dongliao River. Content includes morphological variation, age and growth, feeding habits, reproduction and catch groups. The length and weight of the crab fish in Erziyichang Reservoir are W = 0.004487L ~ (3.61 6153), which are omnivorous fish mainly composed of cladocerans and plant debris. However, the composition of food in different seasons varies. The second instar reached sexual maturity; male to female ratio of 1.1: 1; individual fertility 15,346-40,257 tablets. The population consisted of 1-5 age groups of 5 age groups. Individuals in the 14-16cm body length group were the main fishing targets, accounting for 60% of the total fish caught. Small-scale economic fish.