i have two new baby pacus.... i had two for over 8 years until they perished in a short from fire ... etc.. i broke down and had to get them again.,. they are in my opinion one of the best fish to own........ they have personality that no other fish can come close in my opinion.. they dance and always appear to be happy.. they do not eat nuts or carrots or any other veggie until they are older and have teeth.. then you can even hear them crunching as they eat a piece of fresh carrot or a nut..... they make me laugh for sure.. right now small pellets, brine shrimp and blood worms and veggie flakes is a good diet.. i hope you can end up keeping him,... they are so worth it.. but they do grow fast so if possible start planning for the future now.