Honestly I don't care lol I am pretty empathic towards all living things, but I can't stand the fish. Their father bought them 3, 2 are dead already (no idea why), and this third one is taking too long to kick the bucket.
Oxygen. You have no aeration system in the bowl. Three fish need three times as much oxygen as one fish. Kill two fish and the last one survives.
Anyway Simba is cute.
As a rough rule of thumb for a regular type goldfish, 1" of fish needs 1 sq ft (3" x 4") of surface water to survive, so by the look of it your tank is made for 1 British Standard goldfish and a bit , if you don't have aeration.
Anyway , fish are brilliant. Beat cats hands down anyway. And they're more intelligent.