My indoor RES in my aquarium have actually decreased the number of FHM they are eating every day over the last week. Water temps and other water parameters all remain the same. It could be the new batch of minnows that were delivered last week at the bait shop, they are more medium sizes rather than small; photoperiod as I do have some light coming in from the stairwell and a window; or they have hit the wall as far size in the 75 gallon aquarium that I have them in. The two biggest RES in the aquarium should be at least 8-1/2" now.