One of the four kelberi I received from Jeff a couple of months ago wouldn't eat for the longest time. It arrived as a runt and I left it in the tank to sink or swim (eat or starve). It took weeks, during which time I swear the fish didn't eat anything, then one day it finally started pounding massivore like mad. It was probably 3.5" or so. Sadly, it was never going to make the cut to go in my big tank, so I introduced it and another kelberi missing a pectoral fin to clove oil this past weekend after having no luck giving the fish away.