Fig. 4From: Nile tilapia (Oreochromis niloticus) invasion impacts trophic position and resource use of commercially harvested piscivorous fishes in a large subtropical riverTrophic position and δ13C values (mean + SD). a Comparison of mean trophic position of piscivorous culter fish, mandarinfish, and catfish from invaded and reference rivers. b Comparison of mean δ13C values of piscivorous culter fish, mandarinfish, and catfish from invaded and reference riversBack to article page