Length-Weight Relationship and Condition Factor of Mastacembelus armatus (Lacepède 1800) from Burhi Gandak River, North Bihar, India

The study has been conducted to investigate the length-weight relationship and Fulton's condition factor (Kn) of the freshwater spiny eel, Mastacembalus armatus (Lacepede 1800) from the river Burhi Gandak. A total 300 specimens of M. armatus were collected during July 2019 and June 2020. The observed length of M. armatus was ranged from 6 cm to 58.4 cm and weight from 3 to 654g. The species showed negative allometric growth pattern as depicted by the estimated b value (growth coefficient) i.e., 2.52 and the Fulton's condition factor (Kn) as 0.29±0.15. Highly significant results were reported for all LWR regression parameters. These findings will serve as a foundation for the sustainable conservation and management of the fishery resources in Burhi Gandak River, North Bihar, India.