In order to study the spatial and temporal characteristics of Gobioninae fishes in Lake Taihu, fish samples from eight monitor sites in 2013 were analyzed in this paper, and fish populations changes were also detected through various methods which included index of relative importance, Margalef, Shannon-Wiener, Simpson and Pielou. The results showed that totally eight species of Gobioninae fishes were captured in Lake Taihu, and those Gobioninae fishes mostly distributed in the nearshore areas at Pingtaishan, Gonghu and Lishanwan. The maximum and minimum Gobioninae fish production appeared in July and May, respectively; whereas the maximum and minimum Gobioninae fish biomass were in April and January, respectively. Investigations indicated that Pseudorasbora parva，Hemibarbus maculatus，Abbottina rivularis and Sarcocheilichthys nigripinnis were the dominant population in Gobioninae fishes in Lake Taihu. The Gobioninae fishes could account for the total fish captures between 1.84% and 27.7%, the Gobioninae fishes Shannon-Weiner index(H′) ranged between 0.1679 and 1.6860. The dominant fish populations in Lake Taihu were approaching to simplification and miniaturization compared with previous studies. Environmental changes and excessive fishing might be the main reason that caused above spatial-temporal characteristics of Gobioninae fishes in Lake Taihu.

Key words：Lake Taihu; Gobioninae fishes; spatial-temporal feature; diversity index