Animal protection advocates have raised concerns about the possible suffering of fish caused by angling. A fish hooked in the gills or stomach usually has a very high Mortality rate. Hooks with no barbs or using hooks that dissolve in a short time (and are not removed from the fish) minimize harm to fish. But catch and release exposes a fish to being caught several times by multiple fishermen. Handling a fish several times may not be good resource management or humane. 