fishes and fish

Hello, everyone:

Please look at the following sentences and tell me which is correct.

She caught five little fishes.

She caught five little fish.

Are they all correct?  Please give me your opinion. Thank you!!

I was taught that fish(pl) means many fish of the same species, and fishes means many fishes of different species. Correct me if I'm wrong.

Hi Anon

Using the word 'fish' as a plural just means 'many fish' -- it could be just one species or many different species.  Saying 'a lot of fish' is like saying 'a lot of birds' or 'a lot of animals' -- there is simply no differentiation made.

The word 'fishes' is used when you differentiate between species.