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研究了河川沙塘鳢的年轮特征、生长特性、繁殖和摄食习性。观察比较了耳石、鳞片、脊椎骨和胸鳍支鳍骨的年轮特征，选取耳石作为鉴定年龄的依据。渔获物有０～Ⅳ龄五个年龄组，其中Ⅰ和Ⅱ龄组占渔获量的８５％，Ⅳ龄组仅为１．０２％。体长与耳石半径呈直线相关。体长与体重（Ｗ）和纯体重（Ｗ′）均呈指数函数增长关系，Ｗ＝２．２４１６×１０－２Ｌ３．０８６７；Ｗ′＝２．４９８×１０－２Ｌ２．９７４７。卵巢发育分Ⅵ期及重复发育的Ⅳ′和Ⅴ′期，属分批非同步型产卵鱼类，产卵时间为３～６月，盛产期为４～５月，繁殖期间至少产两次卵。该鱼主要以无经济价值的小鱼和虾为食
The characteristics of annual rings, growth characteristics, reproduction and feeding habits of the sand pond 河 were studied. The characteristics of annual rings of otoliths, scales, vertebrae and pectoral fins were observed and compared, and the otoliths were selected as the basis for identifying the age. Catches were 0 to 4 age five age groups, of which Ⅰ and Ⅱ age group accounted for 85% of catches, Ⅳ age group only 1.02%. Body length and otolith radius were linearly related. Body length and body weight (W) and pure body weight (W ’) showed an exponential growth relationship, W = 2.2416 × 10-2L3.0867; W’ = 2.498 × 10-2L2.9747. Ovary development stage Ⅵ and IVA and Ⅴ phase of repeated development, is a non-synchronized batch-type spawning fish, spawning time is 3 to 6 months, the rich period of 4 to May, at least twice during reproduction egg. The fish mainly for non-economic value of fish and shrimp for food