you could do the parrots and the firemouths but if the tank is big enougth maby the oscars but its hit and miss with parrots some times their all right but some times thir not
thanks for the vid i am only shearing personal experiense i didnt say oscars cant be with parrots i am just pointing out that wen they get 8"+ parrots can get very territorial mine attacks everything that comes in the tank (including my hand) but if youve got a big enough tank go for it nice tank by the way