Differentiation of endangered butter catfish, Ompok bimaculatus populations along the selected habitats of South-western Bangladesh: Evidence from morphological characters

Abstract

Knowledge on biological identification at the genus, species and stock levels of aquatic organism plays a vibrant role from numerous perspectives such as evolution, taxonomy, ecology, conservation and management (Kalhoro et al., 2015). Numerous approaches have already been ARTICLE INFO

Morphometric and meristic characteristics of pabda catfish (Ompok pabda) reared in biofloc and traditional culture system

“…(2019) in O. pabo and Mahfuj et al. (2020) in O. bimaculatus . The ANOVA test demonstrated significant variations in the p ‐values of five meristic features (AFR, DFR, VFR, PFR and BR) among O. pabda species raised in biofloc and traditional culture systems, confirming that meristic counts depend on body size and vary with fish growth (Ahirwal et al., 2023).…”

“…(2016) in O. pabda , Ng and Tan (2004) in O. platyrhynchus , Mahfuj, Hossain, Jinia et al. (2019) in O. pabo and Mahfuj et al. (2020) in O. bimaculatus .…”

“…This is because their habitats and conditions can vary greatly. Eventually, these modifications alter their morphology, physiology and swimming behaviour (Mahfuj, Hossain, Jinia, et al., 2019; Mahfuj, Rahman, Islam, et al., 2019). The morphometric data showed that the regression coefficient exhibits a variable strength of the relationship between the TL and other characteristics for each species.…”

“…Despite increasing demand and the introduction of modern farming methods, morphometric studies on O. pabda are still lacking. Only three reports of the species like O. pabda (Chaklader et al., 2016), Ompok pabo (Mahfuj, Hossain, Jinia, et al., 2019) and Ompok bimaculatus (Mahfuj et al., 2020) were found, but researchers took samples from natural conditions only. However, several workers studied morphometric characteristics for many other catfish species such as Silurus triostegus (Jawad & Al‐Janabi, 2016), Hemibagrus wyckii (Aryani et al., 2017), Chrysichthys nigrodigitatus (Whenu et al., 2018), Clarias gariepinus (Onyekwelu et al., 2021; Yusof et al., 2019), Wallago attu (Prasad et al., 2020) and Ictalurus pricei (Ruiz‐Campos et al., 2020).…”

Stock identification of the Reba carp, Cirrhinus reba: Insight into conventional and truss network-based morphometrics

“…Additionally, geographical variation is one of the major contributors of changes of meristic characters due to the fluctuations of environmental circumstances (Asaduzzaman et al, 2021;Gain et al, 2017;Kashefi et al, 2012;Mahfuj et al, 2019a, b). Aggressive behavior (Mahfuj et al, 2020b;Simon et al, 2010) coupled with feeding habits might be an important factor of losing their fins and spines because of carnivorousness (Mishra et al, 2013;Mahfuj et al, 2021; and omnivorousness (Sivakami, 1982) feeding pattern of Lepidocephalichthys annandalei. However, the phenotypic flexibility of fish is very high and they adjust rapidly by altering their body maintenance and conduct to natural vicissitudes due to the fluctuations of their habitats as well as their environments.…”