First record of the razorbelly scad Alepes kleinii (Bloch, 1793) (Carangidae) along the coast of Bangladesh

Abstract

Background: The Bay of Bengal coast, Bangladesh is a hotspot of fisheries abundance and diversity. A new species of Carangid family Alepes kleinii is recorded and described for the first time in the coastal waters of Bangladesh. Results: A total of 29 individuals of Alepes kleinii were collected from the surveyed areas between January to March, 2016. Validation of this species was confirmed by phenotypic characteristics including body and fins colour, shape, vertical stripes, number of fin rays etc. which were found to be identical to that of the Alepes kleinii described in existing literature. The regression parameter value (b = 2.81) of the length-weight relationship (W = aL b) indicates that the Bay of Bengal provides favourable environmental conditions for the growth and development of this species. Conclusion: The discovery of the razorbelly scad in these waters provide valuable information regarding species distribution and extension, location and habitat preference. This information is prerequisite for the sound management of the coastal fisheries of Bangladesh.

Length-weight relationships of Acanthopagrus longispinnis (Valenciennes, 1830), Raconda russeliana (Gray, 1831) and Coilia neglecta (Whitehead, 1967) from the Bay of Bengal coast, Bangladesh

“…During the study period, specimens of each species from juvenile and adult stage were examined to attain a better species‐specific estimate (Rastgoo, Fatemi,Valinassab, & Mortazavi, ; Siddik et al, ). The estimated values of coefficient of allometry ( b ) of three species remained within the expected limits of 2.5 to 3.5, which are in line with the finding of other researchers (Froese, ; Siddik, Hanif, & Chaklader, ; Siddik, Hanif, Chaklader, Nahar, & Mahmud, ; Siddik, Hanif, Nahar, Chaklader, & Kleindienst, ). The coefficient of allometry ( b ) for A. longispinnis was 3.192, which exceeded the Bayesian prediction (2.95) based on sub family body shape (Froese, Thorson, & Reyes, ).…”

Length-weight relationships of three estuarine fish species from Bangladesh

“…Although sample size of Toxotes chatareus was fairly large, the study covered only 65%–70% of the known total maximum length for these species which probably due to the domination of small size fish in these geographical area or environmental constraints. The values of exponent ‘ b ’ for all fish species ( Toxotes chatareus , 2.926; Datnioides polota, 3.106; Chela cachius , 2.968) in the present study were within the normal range of 2.5–3.5 (Froese, ; Hanif, Siddik, Chaklader, Pham, & Kleindienst, ; Islam et al, ; Siddik et al, ; Siddik, Hanif, Nahar, Chaklader, & Kleindienst, ). Albeit the regression parameter ‘ a ’ and ‘ b ’ may vary with sample size, different length standard, sampling season, gonadal maturity, sex and stomach fullness (Hanif, Siddik, Nahar, Chaklader, & Fotedar, ; Wang, Xie, Chang, & Huang, ).…”

New distributional record of oblique-banded grouper, Epinephelus radiatus (Day, 1868) from the St. Martin Island, Bangladesh

“…Species distribution is affected by a simple 'suitability' measure, established by the combination of unimodal responses to environmental variables (Meynard and Quinn, 2007;De-Marco et al 2008). Climate changes are predicted to potentially affect population size, survival and distribution of organisms (Walther et al 2002;Preuss et al 2014;Su et al 2015;Lu et al 2015;Hanif et al 2017;Siddik and Hanif, 2020). The highly discrete geographical distribution of species points towards a strong preference for a particular type of habitat (Hanif et al 2019 (Castellanos-Galindo et al 2018).…”