Abstract
The generalized length-length relationships of Chanda nama ((Hamilton, 1822) belongs to Ambassidae were studied separately for a period of a calendar year collected from the Old Brahmaputra River, Mymensingh, Bangladesh for male, female and combined populations. A total of 1170 specimens were examined where 599 were male and 571 were female. The standard length, fork length and total length of male ranged from 19 to 79 mm, from 23 to 90 mm, and 28 to 100 mm respectively. The standard length, fork length and total length of female were found from 15 to 81 mm, 24 to 89 mm, and from 29 to 100 mm respectively. The generalized relationships of standard length and fork length, fork length and total length, and standard length and total length of male, female and combined populations were FL = 1.08 SL+1.41, TL = 1.11 FL + 1.54 and TL = 1.20 SL+2.81; FL = 1.09 SL+1.23, TL = 1.12 FL+1.04 and TL = 1.22 SL+2.22; and FL = 1.09 SL+1.20, TL = 1.11 FL+1.27 and TL = 1.22 SL+2.38 respectively. The coefficient of determination (R2) revealed high values in all regression analyses. In length–length relationships, the coefficient of determination (R2) ranged from 0.973-0.990. The present findings of this study will be helpful for a well-organized and significant exploitation and regulation of the Chanda nama fishery in the Old Brahmaputra River and surrounding ecosystems.
 Res. Agric., Livest. Fish.8(3): 339-347, December 2021
Highlights
A member of the family Ambassidae, Chanda nama (Hamilton, 1822), is commonly known as elongate glass-perchlet (Talwar and Jhingran, 1991) is one of the important small indigenous fish species and popular food fish having good consumer preference in Bangladesh
The data on length-length relationship is considered to be insufficient for this species in the Old Brahmaputra River; the present study was conducted to widen the observation of length-length relationships of an important small indigenous species C. nama of Bangladesh
The standard length, fork length and total length of female measured from 15-81 mm, from 24 to 89 mm, and from 29 to 100 mm, respectively (Table 1)
Summary
A member of the family Ambassidae, Chanda nama (Hamilton, 1822), is commonly known as elongate glass-perchlet (Talwar and Jhingran, 1991) is one of the important small indigenous fish species and popular food fish having good consumer preference in Bangladesh.
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