What are the best fish to put with a pink, blue and a green

  I have a 65 liter fish tank which equivalent to what? 20 something gallons.

i have inside now 3 parrot chichild fish. but the ones that you wont come across in nature. a blue one, a green one and a pink one. they are fairly small say 4cm.

which would be the best fish to put with them?
Because they are dyed, the won't live as long and most likely won't get to be the max of 6 ". It seems like you know they are a hybrid . You shouldn't really put anything else in your tank. Just keep the filter clean and do regular water changes and you will be fine. If you put other fish in the tank, they can't be aggressive fish. As the parrots get bigger, their mouths won't close (that is the breed, not the dyeing). They would get picked on, stressed out and die. You have 3 unique fish, just enjoy what you have. Dyed fish are sold mainly to people who don't know what they getting. The fish are dipped into a caustic solution, then into dye. Most of the fish die during the process. They also have tattooed fish and injected fish. GloFish are genetically mutated and their offspring have the same coloration as the parents. Sorry, just rambling on. Good luck and enjoy your fish.
im sorry i dont know what would go good with that, but i know whats NOT compatible. Goldfish and any fresh water fish. goldfish produce large amounts of ammonia which may kill other fish and fresh water fish well live in fresh water while parrot fish need salt water
They won't live as long as natural colored ones, pets question and answers,www.5d2d.com

Its 17 gallons, thats-really-small.

They get pretty big

Nothing else can go in there,

.
Those are geneticallyy altered mutant fish injected with dye, why would you support such a cruel practice. Im boycotting this question