This research describes the first complete and inclusive information on morphometric and meristic characteristics of three Ambassid species (Chanda nama, Parambassis lala and Parambassis ranga) from the Mathabhanga River collected during August 2017 to July 2018. In our study, range of the total length was 2.0–7.2 cm for C. nama; 1.7-3.9 cm for P. lala and 1.9-6.4 cm for P. ranga. All length-weight relationships were highly significant (p < 0.001) with r² values ≥ 0.900 (except W vs. PrDL relationship in P. lala, where, r² = 0.861). Also, all length-length relationships were highly correlated with r² values being ≥ 0.900. Based on r² value, W vs. FL and TL vs. FL was best fitted model for all the three species among the 11 equations. The calculated fin formula is: dorsal, D. 21–22 (VIII/13–14); pectoral, P₁. 8–10 (2/6–8); pelvic, P₂. 6 (I/5); anal, A. 17-18 (III/14–15); and caudal, C. 20–22 (4/16–18) for C. nama; D. 20–21 (VIII/12–13); P₁. 8–9 (1-2/7); P₂. 6 (I/5); A. 16-18 (III/13–15); C. 18–20 (4-6/14) for P. lala and D. 20–21 (VIII/12–13); P₁. 9–10 (2/7–8); P₂. 6 (I/5); A. 18-20 (III/15–17); C. 22–24 (4-6/18) for P. ranga. These outcomes will be a functional tool for identification of Ambassid fishes up to species level in any water-bodies of Bangladesh as well as in the adjacent countries.

中文翻译：

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三种鱼（Chanda nama，Parambassis lala和Parambassis ranga）的形态特征和综合特征

这项研究描述了2017年8月至2018年7月收集的来自Mathabhanga河的三种Ambassid物种（Chanda nama，Parambassis lala和Parambassis ranga）的形态和特征特征的第一个完整的包容性信息。在我们的研究中，总长度的范围为C. nama为2.0–7.2厘米；1.7-3.9厘米为P.拉拉和1.9-6.4厘米为P.朗高。所有长度-重量关系均高度显着（p <0.001），r ² 值≥0.900 （除了P. lala中W vs. PrDL关系，其中r ²= 0.861）。另外，所有长度-长度关系与r ²值≥0.900高度相关。基于r ²值，对于11种方程式中的所有三个物种，W vs. FL和TL vs. FL是最佳拟合模型。计算的鳍式为：背D. 21-22（VIII / 13-14）；胸，P ₁。8-10（2 / 6-8）; 骨盆，P ₂。6（I / 5）; 肛门，A。17-18（III / 14-15）；和尾部，C. 20-22（4 / 16-18）为C. NAMA ; D.20-21（VIII / 12-13）；P ₁。8–9（1-2 / 7）；P ₂。6（I / 5）; A.16-18（III / 13-15）；P. lala和D.20-21（VIII / 12-13）为C.18-20（4-6 / 14 ）；P ₁。9-10（2 / 7-8）；P ₂。6（I / 5）; A.18-20（III / 15-17）; C. 22–24（4-6 / 18）朗格舞。这些结果将成为在孟加拉国及邻近国家的任何水域中识别物种最高级别的Ambassid鱼类的功能性工具。