A recent trend has become quite widespread in the field of biological science; restoration of "native" species. This has become quite prevalent in the fisheries departments of many states and it is rampant in many federal agencies; especially in the lands under the management of the Interior Department. By poison, electrofishing, gill netting, encouraging anglers to kill certain target species and recently by endeavoring to manipulate the fish's chromosomes they are attempting to eliminate in favor of "native" species.