I kept one with black neon tetras and danios. But it was 16-17 inches and not fast enough to catch them. Nor was it interested in eating them as it ate only the finest local prawns from Whitstable Bay!
Was the parrot in the same tank? If it was did it die? I heard that puffers release a poison when they puff up that will more than likely kill everything in the tank.
when i had mine i saw it puff up twice....the first time was accidental the second was out of ignorance. The first was when it got attacked by my florida gar, after that the faaka made the gars life a living hell and it was only 3 inchs the gar was 10...second was because i took it out of the water.