"במצגת יש דיון ארוך על דגים בים התיכון."

Translation: In the presentation there is a long discussion about fish in the Mediterranean sea.

[Gotenks33]

I wrote debate for דיון (instead of discussion) but was marked wrong..

[Raphael_P]

There's more than one species of fish in the mediterranean so 'fishes' is the correct plural here, and of course it's not even accepted

[DOROTHYWhi7]

I wrote exactly the same thing as them and it's not accepted

[MrsT637020]

Fish, in English, is both singular and plural!