Length-weight relationships for eight fish species from the Ravi River, north-western India

Abstract

Length-weight relationships (LWRs) were evaluated for Badis badis (n = 25), Sperata seenghala (n = 26), Labeo gonius (n = 34), Rasbora rasbora (n = 30), Bagarius bagarius (n = 24), Gagata cenia (n = 27), Glyptothorax stoliczkae (n = 24) and Channa orientalis (n = 28) from the Ravi River tributary in North India. Altogether 218 samples of eight species were obtained between May and November 2014 using cast nets and gill nets. LWRs for these species were unknown to FishBase, and new maximum lengths were recorded for two of these species.

Length-weight and length-length relationships of four endemic fish species caught from Payra River, Southern Bangladesh

“…However, the estimated value of b for O. pabo was a little bit higher while A. caninus was lower than the value reported in FishBase. The estimated b value was 3.17 for G. cenia which is almost similar in Ravi River (3.15), north western India (Sharma, Mir, Singh, Akhtar, & Pandey, 2015). These variations could be related to different environmental and biological factors such as temperature, salinity, food (quantity, quality and size), habitat and gonad development, spawning period season, sex, season, stomach fullness, length range of sampled specimens and health Lim, Chong, Lim, & Yurimoto, 2014;Siddik, Hanif, Chaklader, Nahar, & Fotedar, 2016).…”

Length-weight relationships of 12 indigenous fish species in the Gajner Beel floodplain (NW Bangladesh)

“…Of the 12 fish species, information on LWRs was not available for six species in the FishBase online database (Froese & Pauly, ). Previously reported b values of LWRs were 3.01 for C. orientalis (Sharma, Mir, Singh, Akhtar, & Pandey, ), 3.02 for M. pancalus , 3.12 for N. nandus (Hossain, Ahmed, Leunda, Roksanul Islam et al., ), 2.92 for P. ticto (Hossain, Jasmine et al., ) and 2.79 for T. fasciata (Hossain & Afroze, ); these were all lower than in our present study (Table ). In addition, a previously noted b value for the LWR of H. fossilis was 3.14 (Khan, Khan, & Miyan, ), which was higher than in our present findings (Table ).…”

Length-weight and length-length relationships for seven fish species from the Zohreh River, Iran

“…Understanding of the length-weight relationships (LWRs) and lengthlength relationships (LLRs) in fisheries science is necessary to estimate the biomass (Altin, Ayyildiz, Kale, & Alver, 2015;Froese, 2006;Froese, Tsikliras, & Stergiou, 2011;Hasankhani, Keivany, Daliri, Pouladi, & Soofiani, 2014;Sharma, Mir, Singh, Akhtar, & Pandey, 2015), and management and assessment of stocks that are important tools in fishery research (Ak, Kutlu, & Aydın, 2009). This relationship is generally presented by the equation W = aL b .…”