Table 2. t-test results comparing each fish species abundance between Gereb Tsedo (GTS) and Elala streams

Response variable	GTS (Mean ± SE)	Elala (Mean ± SE)	t-value	df	p-value
Garra aethiopica	7.17 ± 4.93	0.00 ± 0	1.45	10	0.177
Garra blanfordii	601.00 ± 260.27	200.50 ± 42.09	1.52	10	0.039*
Garra dembecha	75.17 ± 30.73	60.33 ± 23.80	0.38	10	0.710
Garra ignestii	128.33 ± 50.07	19.83 ± 15.96	2.06	10	0.043*
Total fish abundance	811.67 ± 309.55	280.67 ± 62.77	3.20	10	0.0084**

p < 0.05;
p <0.01.