Stream order Species Average abundance (%) Average similarity (%) Contribution %
1st P. oxycephalus 69.5 47.3 95.7
2nd P. oxycephalus 53.8 28.3 78.3
G. herzensteini 15.4 2.6 7.1
3rd P. oxycephalus 35.2 22.4 55.4
M. omeiensis 24.0 22.1 28.1
S. macrolepis 16.4 3.8 9.3
4th S. argentatus 27.1 26.4 54.1
H.leucisculus 3.6 9.4 19.3
Z. platypus 7.5 5.6 11.4
G. herzensteini 20.5 3.3 6.8