Ichthyofaunal Assemblage of the Dianshan Lake, Shanghai, China: Implications for Management

摘要: Ichthyofaunal diversity of the Dianshan lake in Shanghai, China was assessed during year 2013 from samples finfish harvested using fleets gillnets and trawls different mesh sizes with aim generating necessary data that could support sustainable use this lake. Morphometric parameters specimens caught were taken following standard procedures. Totally 21,308 belonging to 40 species, 15 families 7 orders encountered throughout study period. Seasonal abundance lowest (395 individuals) March (spring) highest (4428 August (summer). Cyprinidae dominant family (22 species) Coilia ecetenes taihuensis most abundant species (30.69%), followed by Acheilognathus taenianalis (17.8618%), Plagiognathops microlepis (16.567%), Carassius auratus (14.492%). The evenness, richness biodiversity faunal assemblage also evaluated Shannon–Wiener index (H′), Margalef’s Index (d) evenness (J) respectively. Hypophthalmichthys nobilis largest heaviest fish (34.909 cm, FL; 889.355 g, W), smallest length recorded Odontamblyopus rubicundus (4.19 cm) while Plecoglossus altivelis (1.1 g) terms mean weight. condition factor for all (K = 1.72), showing generally ‘good’ condition. Fluctuations occurrence noted our may be accounted variation physico-chemical Lake respect time. But, under such a situation it is evident small increased great extent few like became dominant.