All cats would fish if they could, eh? But these are an actual species of cat, not far in relation from the housecat, literally called the "fishing cat".
They have partially webbed paws. They have a double layer of fur, insulating them against cold water. The claws you can see there, are different from regular housecat claws in that they never fully retract. They actually swim after fish - dive in and pursue - and the claws are their fishing hooks.
They live mostly in southern Asia and generally avoid people.
Interesting specialization in species...