Y. Atifah, A. Achyar, R. Sumarmin
Tambra Fish (Tor tambra) is a commodity of freshwater fish with a high economic rate, therefore the community takes tambra fish continuously. The cultivation of tambra fish from Batang Gadis river Mandailing Natal has not been done, this research aims to find out the population of tambra fish and physical-chemical factors in Batang Gadis river. This type of research is descriptive. The location of the study was determined using purposive random sampling at every 4 (four) stations. The results showed that the population of Tor tambra in Batang Gadis river Mandailing Natal is classified as medium with the population structure is mostly the size of a small fish. The condition of the habitat of tambra fish in Batang Gadis river Mandailing Natal in general is still good enough for the life of tambra fish. © Published under licence by IOP Publishing Ltd.
Biology Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, West Sumatra, Padang, Indonesia
