howmany後面應該加fish還是bird

後面加fish，例如：

1、How many fish did you catch?你捕到幾條魚

2、How many fish did you catch today?你今天釣了幾條

3、How many fish do you think there were in that school?你想在那個魚羣裏有多少魚

4、How many fish were there in that school?那羣裏有多少條魚