Length-weight relationship and condition factor of endemic jielabu betta fish (Betta dennisyongi Tan, 2013) in the water canals of Beutong Hills, Aceh Province, Indonesia

Jielabu (Betta dennisyongi) is a fish endemic to the water canals of the Beutong Hills, Aceh Province, Indonesia. This research aims to determine the growth patterns and condition factor of jielabu. Sampling was carried out from August 2023 to October 2023. During the study, 151 fish samples were obtained, consisting of 107 males and 44 females. Total body length ranged from 2.1 to 5.3 cm, and weight ranged from 0.05 to 0.85 g. The results showed that the male growth pattern was negative allometric, and the female growth pattern was positive allometric, with condition factors ranging from 0.5463 to 1.7686. All fish samples had a condition factor K=1.0235, meaning good growth conditions.