People need to realize that wild fish always come in skinny. they have to starve them for a few days before shipping out of south america, and when they arrive, they're always thin, and stressed. if you want a fat and round peacock bass, you'd have to buy a captive raised one or a generic tank bred variety.
one some of the rarer peacock bass varieties, they're very sensitive on arrival, and death toll is often high., once acclimated and fattened, would mean at least 2 weeks after arrival, by then, the price will go up since it has gone through dying, quarantine, fattening, feeding., etc.