Oh sure. Trout are introduced in Australia, and although they are invasive they are regarded as a valuable species - before COVID the tourism value of the Tasmanian trout fishery was large. But some places are remote, or for some reason were overlooked, and trout were never introduced there. Which is a good thing if you are a small-bodied native Australian freshwater fish, or an insect.
I work with fish, and am constantly humbled by many aspects of their biology and capacity. But I also love fishing, and trout grilled on an open fire made of snow gum twigs served with rice, herbs and a nice salad (watercress is also invasive in many places near waterways in Australia) is one of the things I really love.
Because of the constant exposure to fish that my job brings, more and more often I just take a camera and sit in a nice place by the water, and let hard working commercial fishers catch my fish for me. But when I retire I plan to take it up again and to build a campervan, and spend summers in the Snowy Mountains or Tasmania fishing.
Marty