Mairina, Siti Aminah2022-06-152022-06-152021-12PerpustakaanElfitrahttps://repository.unri.ac.id/handle/123456789/10532The Sail River and Kampar Kiri River have different ecosystem characteristics that affect the growth of fish living in those area. The growth pattern may be reflected in the otolith’s growth ring pattern. This research aimed to understand the growth pattern present in the otilith of Notopters notopterus. The fish was captured using a cast net and fishing nets. Fifty five fishes were captured (25 fishes from the River Sail and 30 fishes from Kampar Kiri River). The otolith growth and its ring pattern were checked using a binocular microscope. Results shows that dark growth ring pattern in the fish from the Sail River and Kampar Kiri River had almost the same number of dark ring. Water quality in the sampling area was observed to be good and it might be sufficent to support the life of N. notopterus.engrowth patternotolithdark ringNotopterus notopterus.Article