no you cannot say ‘two dolphin’. fish and dolphin are not in the same category. fish falls under the same category as cereal, bread and fruit, having the function of a lexical quantifier.

to explicate clearer, you say that the croissant is a bread. you don’t say the bread is a croissant. likewise, you say that maize is a cereal, not the other way around. hence, the clownfish is a fish, and not the other way around.

btw, your grammar is wrong as well. ‘your argument do not’ should read ‘your argument does not’.

maybe i sound a bit cocky here, but i was working as an editor at oxford for 1 1/2 years before coming over to where i am now. am still dealing with educational texts. i do not profess to be excellent in grammar, however, what i do have is the latest in reference books and housestyle conventions, which is where i source my explanations.

Could I rephrase your argument? Would you say, ‘She bought two fish from the market’ or ‘She bought two fishes from the market’?

Further to that, do you say ‘There’s two fish left in the sea’ or ‘There’s two fishes left in the sea’?

Then again, is it ‘Would you like (to have) two fruit?’ or ‘Would you like (to have) two fruits?’?

Hope it clears my argument, in the first place. You also replied to AWM as ‘my dolphins’. Is it okay to use ‘my two dolphin’ then?

Btw, have you chosen the fishes’ names? I’d reckoned that my suggestion of splas-her and splas-he is not very acceptable in light of my comment.

You say, ‘She bought a lot of fish from the market.’

You don’t say, ‘Fishes and Chips.’ The dish is ‘Fish and chips.’

You don’t add the plural marker ‘-es’ to the word, except in cases where you want to distinguish the different species.

Remember? There’s plenty of fish left in the sea, you don’t say, there’s plenty of fishes in the sea.

Check your reliable Oxford Dictionary. It’s like saying, ‘Would you like some fruit?’ You can’t say, ‘Fruits’, except where you want to talk about different types of fruits. On the same tree, there are many fruit.

Just to correct your grammer on two fish. It should be two fishes.

Btw, The suggestion of splas-her and splas-he as the names is good.

Thanks,
aznijar.