| prey capture behavior of native vs. nonnative fishes: a case study from the colorado river drainage basin (usa). | the colorado river drainage basin is home to a diverse but imperiled fish fauna; one putative challenge facing natives is competition with nonnatives. we examined fishes from colorado river tributaries to address the following questions: do natives and nonnatives from the same trophic guild consume the same prey items? will a given species alter its behavior when presented with different prey types? do different species procure the same prey types via similar feeding behaviors? roundtail chub (g ... | 2012 | 22514041 |