an aquarium? I read it in the 90s, but think it was probably written in the 70s (had a seventies look to the illustrations).
I thought the title was something like "I am a fish", but google hasn't helped me.
it has colourful looking fish that has fins that look a bit like like wings. The story starts off with something like I am a fish, I was born in the sea, I had lots of brothers and sisters" Then there is a bit describing all the different types of fish (swordfish, angler fish, etc). The rainbow-winged baby fish are attacked by a black fish with big teeth that looks like a piranha, and he is "all alone" for a while. Eventually he runs into a fish that looks like the fish that ate his family and he eats it, because he has grown so big that he dwarfs the piranha fish. There is possibly a bit where he has baby fish and teaches them to swim in one big group so they scare the piranha fish and are safe. At the end of the book, he is caught and taken to an aquarium.
I thought the title was something like "I am a fish", but google hasn't helped me.
it has colourful looking fish that has fins that look a bit like like wings. The story starts off with something like I am a fish, I was born in the sea, I had lots of brothers and sisters" Then there is a bit describing all the different types of fish (swordfish, angler fish, etc). The rainbow-winged baby fish are attacked by a black fish with big teeth that looks like a piranha, and he is "all alone" for a while. Eventually he runs into a fish that looks like the fish that ate his family and he eats it, because he has grown so big that he dwarfs the piranha fish. There is possibly a bit where he has baby fish and teaches them to swim in one big group so they scare the piranha fish and are safe. At the end of the book, he is caught and taken to an aquarium.