Bachelor Thesis from the year 2022 in the subject Agrarian Studies, grade: 3.87/4, , course: Aquaculture, language: English, abstract: This is a study of carp polyculture in an earthen pond. During present work the growth and production parameters of different fish species was assessed along with the regular monitoring of water quality parameters. The general objective of this study was to learn the production of carps under polyculture system in an earthen pond. Specific objectives were to access the growth and yields of different carps in polyculture system, to calculate gross margin, B:C ratio and apparent FCR of carp polyculture, to monitor the water quality parameters required for carp polyculture and to learn about the marketing of carps. "Carp Polyculture in an Earthen Pond" is an undergraduate project which was performed at fish farm of Agriculture and Forestry University, Chitwan, Nepal by Subash Yadav Ahir. It was of three month duration and involved a complete series of field as well as lab works that a required during polyculture of carp species. After the completion of project the final result was presented among all the faculty members and students through presentation and after successful thesis defence, B.Sc. Fisheries degree was awarded to me in December, 2022.