Comparison of composition of ecological traits between artificial structures and control sites. (a) migratory type (SE: sedentary species, PO: potamodromous species, and AM: amphidromous species); (b) habitat (Pe: pelagic fish, Mi: mid-water fish, Be: benthic fish); (c) trophic guild ( He: herbivore, Om: omnivore, Ca: carnivore); (d) (4) current preference (Fa: fast, Md: moderate, Sn: slow-none); (e) mouth type ( IM: inferior Mouth, SM: superior mouth, TM: terminal mouth); (f) egg type (Vi: viscous egg, Hi: hidden egg, Fl: floating egg, Mo: mouth brooding egg, Mu: spawn-in-mussel egg). *significant between artificial structures and control sites by chi-square test at the 0.05 level.