Determination on fish diversity indices from Chalan Beel, Bangladesh

An assessment was carried out to determine the fish diversity indices from Ruhul beel 1, 2 and Bamonji beel 1, 2 under Chalan beel in Pabna district of Bangladesh. Data were collected from selected sanctuary sites, focus group discussion, personal and group contract as well as Government and Non-Government organizations with prepared and pretested questionnaire. The fish diversity of the study areas was calculated by various methods namely Species richness (S), Shannon-Wiener diversity indices (H0), Species evenness (E) and Simpson’s diversity Index (D) of fish observed in Ruhul beel and Bamonji beel during the whole study period. The highest species richness was found in Ruhul beel whereas it was less amount in Bamonji beel during the study period. Overall species richness was higher in Ruhul beel. The monthly species richness was significantly (P