VERY near future, took 6 weeks for mine to eat off all of my livebearers, 5 out of the 6 hatchets, a cory, countless babies (from livebearers) and pretty much everything in my tank except the paroons and the gouramis.... and the more they eat the faster they grow...mine put on over an inch in a week when we had to move the guppy tank to his tank (he ate 25+ full grown guppies and less than a week)