I have never had a problem with them only that now they are to big to keep with the other fish for fear of eating them, both are 16", temp is at 72, i have had them for about 4ys now,feeding is around mid evening,i planned on getting 3 hybrid stripped Bass all at 9" but when the shippment came to Milwaukee the fish were killed due to the postal service throwing other items on top, the box was marked LIVE FISH but they didn't seem to care, and they were beautys, i was so pissed every since then i have been trying to get a hold of the guy and try to get another set.