A pacu?
We have a Pacu in a 175 gallon tank. We got him when he was about 3 inches. He’s a much happier fish now that were feeding him live fish from time to time. Should people go out and get them, HELL no. We have had him for 5 years and is about 18 inches long, 5 inches high and about 3 inches thick. He’s to big to tack to a LFS and trying to transport a fish that size to a larger Aquarium in DC would be to hard. He has about 10 more years left in him.
Now if you look at it that way there’s no way I would ever get one for my tank.