Length-weight relationships of three estuarine fish species from Bangladesh

Abstract

Summary The length‐weight relationships (LWRs) of three fish species; Toxotes chatareus (Hamilton, 1822), Datnioides polota (Hamilton, 1822), and Chela cachius (Hamilton, 1822) collected between September 2016 and August 2017 from Tentulia estuary of Bangladesh were analyzed. Fish were caught seasonally using set bag net and cast net with mesh size of 0.5 cm and < 0.5 cm, respectively. LWRs of Toxotes chatareus, Datnioides polota and Chela cachius were calculated as W = 0.0154L2.926 (r2 = .962), W = 0.0149L3.106 (r2 = .992) and W = 0.0109L2.968 (r2 = .981), respectively. The study provides a new maximum total length for Chela cachius.

First record of a non-indigenous lanternbelly, Acropoma argentistigma (Teleostei: Perciformes: Acropomatidae) from the Bay of Bengal coast of Bangladesh

“…The species differs having meagrely greater head length, 40.0-41.0% SL than congeners Acropoma lecorneti, 34% SL (Okamoto and Ida, 2002). Reported specimens were a little bit smaller than maximum SL length reported by Okamoto and Ida, (2002) and Yennawar et al, (2012) which probably related to sampling season, dominance of small size fish, development stage, environmental constrain, availability of food, type of gear used, or fishermen did not reach the adequate place where maximum size of fish were available (Hanif et al, 2017;Hanif et al, 2018).…”

Length‐weight relationships of seven cyprinid fish species from the Kaptai Lake, Bangladesh

“…Parameter b > 3.0 is the indication of highly nourished adult specimens, b = 3.0 indicates similar growth pattern from small to larger size population and b < 3.0 indicates faster growth in length than weight and robustness of small‐sized specimens (Siddik, Hanif, & Chaklader, ). The value of slope b can differ mainly due to several environmental (habitat, season), arti‐factual (length type, size range, specimen number) and biological (sex, maturation of gonad, diet, degree of stomach fullness, growth phase) factors (De La Cruz‐Agüero, Moncayo‐ Estrada, Chollet‐Villalpando, & Cota‐Gómez, ; Hanif et al, ; Nahar, Hanif, Siddik, Chaklader, & Islam, ). It can also differ due to different fishing methodology, preservation technic and post‐harvest time used.…”

“…Length‐weight relationships (LWRs) are important biological parameters used in fish population dynamics to estimate biomass by converting length observations into weight (Chaklader, Siddik, Hanif, Nahar, & Islam, ; Hanif, Islam, Siddik, & Chaklader, ; Martínez‐González, González‐Daza, & Mojica, ; Siddik, Chaklader, Hanif, Islam, & Foteder, ). It also provides baseline information for estimating growth pattern of fish as a part of stock assessment, management and conservation strategies (Ortega‐Garcia, Sepulveda, Aalbers, Jakes‐Cota, & Rodriguez‐Sanchez, ).…”

Length-Weight Relationships of Brown-Marbled Grouper Epinephelus fuscoguttatus Forsskål, 1775 in Bobong Taliabu Waters of North Maluku, Indonesia

“…Dalzell & Pauly, [21], Hariey & Baskoro, [22]. The waters of Bobong Taliabu North Maluku are similar to the Bengal Sea, Bangladesh have the resources of fish with high levels of diversity, Hanif et al [23]. The waters of Bobong Taliabu North Maluku and its surroundings are abundant with ichthyofaunal diversity, one of which is Perciformes species (E. fuscoguttatus).…”