A club for owners of Parrot Cichlids

My daughter's parrots are very young, and I've read that you shouldn't give them fruit because of cloudy water. I was wondering, her plecos love acorn and butternut squash, would that be good for parrots too? Also what other veggies are good for them. We have a frozen medley of brocoli, califlower and carrots, would any of those be ok and how should I go about giving them. Are they even old enough for something like that? They are quarter sized. They eat fish flakes, dried blood worms, freeze dried baby shrimp, nibble at the alge cakes and sometimes tubix cakes. NOT all at once mind you, I feed the flakes daily, and have just started adding a few cichlid floading pellets yesterday. the other things we give them once or twice a week as an additive or treat.