Got 2 of these guys to go along with my severely deformed capa my daughter has named (spoons) lol in Jan at 2-3in in size. They feed primarily on guppies at first and finally started taking bits of krill at times. Fast foward they are now 5-6in both and living together peacefully. The best news is I have finally got them off live fully and all accepting cut silversides at night. Thanks to biggerthebetter on here, learned patience is key with these guys. Here's some pics starting with beginning and recent growth. Spoons is at the end lol