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Size frequency and length–weight relationships (LWRs) for three cephalopods, Indian squid Photololigo duvaucelii, needle cuttlefish Sepia aculeata, and spineless cuttlefish Sepiella inermis were studied. Specimens were caught from the coastal waters of Bangladesh (Moheshkhali Channel and Sonadia Island) using both trawl and marine set bag nets. The maximum dorsal mantle length for the Indian squid, needle cuttlefish, and spineless cuttlefish was recorded to be 228, 135, and 82 mm, respectively. The estimated growth coefficient b was 1.377 for Indian squid, 2.504 for needle cuttlefish, and 1.979 for spineless cuttlefish. The growth coefficient for these three species indicated hypoallometric growth from this region. No information has been published regarding size frequency and LWRs for these three cephalopods from the coastal waters of Bangladesh. The results of this study will be useful for the management and conservation of squid fisheries from the Bay of Bengal.

Relationship between length and weight was described for two gobioid fishes, red eel goby Odontamblyopus rubicundus and Ianceolate goby Pseudapocryptes elongatus, from the Bakkhali River estuary, Cox’s Bazar, Bangladesh. The estimated growth coefficient (b) was 2.734 for O. rubicundus and 2.660 for P. elongatus, which indicated hypoallometric or negative allometric growth (b

This study focuses on the length–weight relationships (LWR) and the relative condition factor (Kn) of Uroteuthis chinensis from the Marudu Bay, Malaysia. The mean mantle length (±SE) and the total body weight (±SE) of U. chinensis were 29.02 ± 1.31 mm and 3.37 ± 0.46 g, respectively. The calculated growth coefficient b was 2.579, which indicated the hypoallometric growth of the animals from the study area. The study also showed that the dorsal mantle length and the total body weight were highly correlated (r = 0.930, p

Trace metal concentrations (Cu, Zn, Cadmium (Cd), and Pb) in salt marsh sediments of the Bakkhali River estuary, Cox’s Bazar, were investigated. Sediment samples from four different sites were analyzed for the selected trace metals by atomic absorption spectrophotometer. The mean value of trace metals ranged 27,18–41.76 μg/g for Cu, 93.51–106.38 μg/g for Zn, 0.16–0.36 μg/g for Cd, and 21.28–32.08 μg/g for Pb in this salt marsh bed. In the correlation matrix, Cu positively correlated with clay (r = 0.968, p

A single specimen of the longhorn cowfish, Lactoria cornuta (Linnaeus 1758), was recorded for the first time from inshore waters near St. Martin’s Island, Bangladesh. It is the first record of the longhorn cowfish from the Bay of Bengal and the fourth record of species belonging to the family Ostraciidae from the territory of Bangladesh. Pirmą kartą pakrantės vandenyse salia Sv. Martyno salos (Bangladesas) buvo sugautas vienas ilgaragės dėžiažuvės Lactoria cornuta (Linnaeus 1758) individas. Tai pirmas užregistruotas sios žuvies aptikimo Bengalijos įlankoje atvejis bei ketvirtas Ostraciidae seimos rūsių aptikimo atvejis Bangladeso teritorijoje.