The names are Caribbean-style, there are oceans between here and there so some of my translations may be a reach:
Pargo: Red Snapper, sold in in Mexico as Huachinango, in Buenos Aires as Besugo, Good deep-fried.
Roncador: in Venezuela it's similar to Pargo, but has a yellow band or stripe. I haven't tried it here yet. In English it might be called Black Drum.
Lebranche: some kind of Mullet. Good done butterfly in the oven or on the grill.
Curvina: apparently it's called Croaker in English. I had no idea.
Cazón: baby shark. in Venezuela it's used shredded and spiced as a filling for empanadas. I'm told it smells strongly of ammonia when it's being cooked. We will find out soon.