Identifikasi dan analisa isi lambung ikan- ikan yang tertangkap di sekitar karamba di waduk Koto Panjang, Kabupaten Kampar, Provinsi Riau

Abstract

A study on gut content analysis of fish species that are captured around the floating caged fish culture area in the Koto Panjang Dam, Kampar, Riau Province has been conducted on June to September 2007. Aims of this research are to understand the type of fishes present aroimd the cages, their food types and also their role in reducing the amount of organic materials originated from fish culture activities. Fish samples were caught by scoop nets and fishing lines and gut content was analysis using a volumetric method. Results shown that 9 fishes species namely goramy (O^hronemus gouramy ), tambakan {Helostoma temincki) , kapiek {Puntius schwanefeldi), paweh {Osteochilus hasseiti), common carp (Cyphnus carpio ), sipaku (Cyclocheleichthys apogon), nile tilapia {Oreochromis niloticus), ingir-ingir (Macrones nigriceps) and baung (Macrones nemurus) are able to eat pellets and fish remams that may present around the cages. Other species, such as belida (Notopterus notopterus), toman (Ophiocephalus micmpeltes), gabus {Ophiocephalus striatus) and tapah (Walfago lean), prey on fish and shrimp only. The stomach of another fish species captured, namely katung fish (Pristolepis grotif), however, fiill of algae. Based on the data of stomach content, it can be concluded that fish that have ability in eating pellet remains present around the cages may have important role in reducing the amount of organic materials originated from floating cages aquaculture