author(s)
Kalpajit Gogoi, Dipak Kumar Sarma, Sangipran Baishya, Kaustubh Bhagawati and Krishna Kanta Tamuli

abstract
A study was conducted for quantitative and qualitative analysis of periphyton composition and the production potential of carps with periphyton based aquaculture system. During the study a total number of 39 genera of periphytic community were identified. Among them 28 genera of algae periphyton comprised of four different groups, Bacillariophyceae (10 genera), Chlorophyceae (12), Cyanophyceae (4) and Euglenophyceae (2) as well as 11 genera of periphytic animal community comprised of Protozoa (2 genera), Rotifera (4), Copepoda (2), Cladocera (3) along with macrobenthic invertebrate (Chironomids larvae) were recorded from bamboo substrate used for periphytongrowth.A declining trend was detected in periphytondry matter (DM), ash free dry matter (AFDM) and ash content value in both the treatment as the period of the experiment augmented, which indicates effective grazing on periphyton by cultured fish species.