Tracer tag on a trout. Trout were introduced to the archipelago in the 1960s. Irish Bay, Kerguelen Archipelago.

introduced species natural reserve adult alone animal tagging close up wildlife radio telemetry indian ocean kerguelen islands fr salmonidae zoology temperate freshwater fish trout february alien species nobody french southern and antarctic lands nature reserve nature reserves nature reserve adults single lonely only solo one lone animal taggings radiofrequency traking radiofrequency trakings radio telemetry radio tracking animal radio tracking radiotracking radio tagging radiotagging radio tracking tracking radio tracking radio telemetry study radio telemetry studies telemetric studies telemetric study wildlife tagging wildlife tracking animal tracking wildlife monitoring animal monitoring zoologies zoologist zoologists zoologicals zoological cold freshwater fish river fish temperate freshwater fishes cold freshwater fishes river fishes trouts exotic species non native species non indigenous species with nobody destruction of biodiversity environment environment protection environment management biodiversity management stage of development individual population management species management world sea and ocean taaf france european union europe salmoniformes actinopterygii euteleostomi gnathostomata vertebrata chordata deuterostomia coelomata bilateria metazoa opisthokonta eukaryota discipline scientific research science freshwater fish fishes particularity species particularity species salmonid actinopterygian bony fish fish animal vertebrate chordate wild animal animal