Diversity of fish species in eight Mangrove areas in Guangdong was investigated between 2016 and 2017 in four seasons. Eighty-three species were found

belonging to 13 orders and 34 families. There were differences in dominant species of the fish captured in the eight Mangrove areas

mainly small fish or baby fish. Significant differences existed not only in fish tails

catches and Shannon-Wiener diversity index

but also in Pielou evenness index and Margalef richness index. A cluster analysis was conducted on the catches in different groups: the group of Chengraowei

Chenghai and Huren Village

Raoping in the eastern part of Guangdong

the group of Futian

Shenzhen and Daya Bay

Huizhou in the Pearl River Delta

the group of Shuidong Bay

Mao ming and Guanghai Bay

Jiangmen in the west of Guangdong

and the group of Gaoqiao

Lianjiang and Qi Ao Islang

Zhuhai. The Sequence analysis supported the results of cluster analysis. The correlation analysis showed that the fish tails

catches and the species numbers as well as Shannon-Wiener diversity index and Margalef richness index had significant correlations with the area of mangrove forests

the local mangrove plants and water temperature.