biostudies-literatureMustafa MGMinistry of Higher Education, Malaysiae12183https://www.ebi.ac.uk/biostudies/studies/S-EPMC8522647biostudies-literatureUnknown9The length-weight relationships (LWRs), condition factor (Kn), growth, mortality and exploitation status of three polynemid fishes, i.e., Filimanus xanthonema (Valenciennes, 1831), Polynemus melanochir (Valenciennes, 1831) and Polynemus paradiseus (Linnaeus, 1758) from Batang Lassa River estuary were estimated. Fish samples were caught during April 2019 to September 2020 using the ESBN (locally called Gnian) having 1.25 to 4.00 cm mesh size. The total length (TL) and body weight of each individual fish was measured to the nearest 0.1 cm and 0.01 g respectively. The growth coefficients (b) for F. xanthonema, P. melanochir and P. paradiseus, were 2.880, 2.717 and 2.724 with the R 2 values 0.956, 0.972 and 0.936 PeerJBiometric indices and population parameters of three polynemid fishes from Batang Lassa Estuary of East Malaysia.PMC8522647FRGS/1/2019/WAB09/UPM/02/2, 07-01-19-2209FRMustafa MGHamli HRajaee AHA Rahim KAfalseBiometric indices and population parameters of three polynemid fishes from Batang Lassa Estuary of East Malaysia.The length-weight relationships (LWRs), condition factor (Kn), growth, mortality and exploitation status of three polynemid fishes, i.e., Filimanus xanthonema (Valenciennes, 1831), Polynemus melanochir (Valenciennes, 1831) and Polynemus paradiseus (Linnaeus, 1758) from Batang Lassa River estuary were estimated. Fish samples were caught during April 2019 to September 2020 using the ESBN (locally called Gnian) having 1.25 to 4.00 cm mesh size. The total length (TL) and body weight of each individual fish was measured to the nearest 0.1 cm and 0.01 g respectively. The growth coefficients (b) for F. xanthonema, P. melanochir and P. paradiseus, were 2.880, 2.717 and 2.724 with the R 2 values 0.956, 0.972 and 0.936 2021-01-01T00:00:00Z20212025-08-27T03:06:38.456Z2022-02-11T12:19:08.216ZS-EPMC85226473472196010.7717/peerj.12183