Beautiful little baby fish in the river / beautiful little fish in the water.
Beautiful little baby fish in the river / beautiful little fish in the water.
Very small fish in the river.
Fish fry in the water.
Lots of small fish in the water of a river with current.
There were about 20 small fish in the water of a very large river.
I can't say which fish they are.
Very nice little fish in the water.