Journal of Fisheries, Livestock and Veterinary Science
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Length frequency, length-length and length-weight relationships including the condition factors of striped catfish (M. vittatus) in wetland ecosystem of Southern Bangladesh
Maruf Hasan*, Tasfia khatun Beauty, Ferdous Ahamed, Mushfiq Rifat, Md Saamim Reja
Faculty of Fisheries, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh.
✉ *Corresponding author: [email protected]
First published online: 14 December 2025.
Faculty of Fisheries, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh.
✉ *Corresponding author: [email protected]
First published online: 14 December 2025.
https://doi.org/10.18801/jflvs.040125.17
Freshwater catfishes are primarily valued for their roles as sources of food and sport, which contributes significantly to their economic importance. The Asian striped catfish (Mystus vittatus, locally called “Tengra”) a small indigenous freshwater species, widely distributed South Asian sub-continent. This study describes length frequency distribution (LFD), relationship between length and length, length-weight and the condition factor in the Atharogachia beel, Patuakhali, Southern Bangladesh. The study was conducted to gather information that could help conserve the natural populations of the species. Local fishers, using various traditional fishing gears like cast net, seine net, and lift net were involved in the study. To get measurements, used a measuring scale to determine the total length (TL), standard length (SL) and forked length (FL) in centimeters and weighed the fish body weight using an electronic digital balance with an accuracy of 0.1. The LFD was estimated by 1 cm TL class interval. The study revealed that maximum individuals (65%) were distributed in the length class of 6.00 cm and 6.90 cm TL, whereas 66% of SL and FL in 5.2 cm and 5.93 cm. The LLR between SL & TL and FL vs SL indicated positive allometric growth significantly higher (b > 3) values was 1.1707, while TL vs FL indicated negative allometric growth significantly lower (b < 3) values was 0.8285. The LWRs between SL vs. BW indicated negative allometric growth significantly (P<0.05) lower was 2.9113, while TL vs. BW and FL vs. BW indicated positive allometric growth significantly higher (p<0.05) values were 3.146 & 3.008. The “KF” value on mixed sexes was recorded from 1.08 to 3.00 (mean = 1.95). The mean KF value (1.95) suggests a healthy population within the river ecosystem. We provided a baseline, including relative length, weight, size and condition factor can help guide sustainable management policies and support stock assessment efforts in surrounding ecosystems in Bangladesh.
Keywords: Striped catfish, Growth, Mystus vittatus, Life history traits, Atharogachia beel
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