Asian Journal of Current Research

Aims: This study presents firsthand information on the length-weight relationship (LWR) and condition factor of the Ocellated pufferfish, Leiodon cutcutia (Hamilton, 1822) (family: Tetraodontidae), from the Ichhamati riverine estuarine zone (Indo-Bangladesh transboundary) in West Bengal, India, with a particular emphasis on morphometric relationships.

Study Design: The length-weight relationship was established using Log W = Log a + b Log L, and the condition factor (Kn) was determined using K = 100*W/L³. Ocellated pufferfish, economically significant as ornamental fish, and freshwater and estuarine fish from the Icchamati River in West Bengal, were examined for morphometric characteristics and total length (% of TL).

Place and Duration of Study: From June 2024 to August 2025, fish samples were collected seasonally (as per IMD) at 10- to 20-day intervals from various brackish water islands and fish landing centres in South 24 Parganas and the Sundarbans estuarine islands, West Bengal.

Methodology: A length-weight relationship (LWR) equation, usually written as W = aLb, where W is weight, L is length, and 'a' and 'b' are species-specific constants, is frequently used to explain the link between a fish's body length and total weight. Understanding fish growth, condition, and biomass estimation is made easier by this relationship. Gillnets (4.0–40 mm), cast-nets (5 x 5 mm to 10 × 10 mm up to 4.5 m2 areas), and scoop nets (1 × 1 mm to 6 × 6 mm) were used to gather the specimens from multiple fish landing centres.

Results: According to our findings, the Leiognathidae family showed negative allometric development (b < 3), which indicates that their length grows faster than their weight. seasonally, the values of the condition factor (Kn) and correlation coefficient (r) range from 1.323 and 0.944 (Pre-monsoon), 1 and 0.981 (Monsoon), and 0.982 (Post-monsoon), and 1 and 0.992 (Winter), respectively.

Conclusion: From this Fishery research, stock assessment, conservation, and the assessment of the fish condition of the Icchamati river, West Bengal, India.