Table 2. Descriptive statistics and estimated parameters of length-weight relationship (LWR) of three Mystus species studied from the upper Brahmaputra basin, Northeast India

Species	Sex	L range(cm)	W range(g)	Regression parameters					Growth pattern1)	t-test	p-value
				a	b	95% CI of b	SE (b)	R2
Mystus cavasius	M	6.5–14.5	2.55–17.34	0.0177	2.554	2.39–2.71	0.079	0.837	A–	31.96	0.000*
	F	7.5–18.0	3.29–21.61	0.0331	2.305	2.05–2.56	0.129	0.696	A–	17.84	0.000*
	Combine sex	6.5–18.0	2.55–21.61	0.0228	2.454	2.31–2.59	0.072	0.768	A–	33.63	0.000*
Mystus vittatus	M	5.2–11.0	1.37–10.39	0.0554	2.062	1.76–2.35	0.148	0.685	A–	13.91	0.000*
	F	3.7–10.3	0.8–9.69	0.0285	2.522	2.42–2.62	0.050	0.911	A–	49.99	0.000*
	Combine sex	3.7–11.0	0.8–10.39	0.0331	2.410	2.29–2.52	0.057	0.842	A–	42.14	0.000*
Mystus tengara	M	5.2-14.0	1.77-19.69	0.0368	2.327	2.17–2.48	0.077	0.930	A–	42.14	0.000*
	F	5.4–11.5	1.73–10.06	0.0472	2.262	2.05–2.47	0.107	0.766	A–	21.13	0.000*
	Combine sex	5.2–14.0	1.73–19.69	0.0440	2.277	2.13–2.41	0.070	0.834	A–	32.20	0.000*

aandb, intercept and slope of LWRs.
A−,negative allometric.
Significant (p < 0.05).
M, male; F, female; L, total length; W, body weight.