They still didn't eat, at least I didn't see it. I threw in 9 lbs of herring after today's feeding of 18 lbs, turned off the lights and left. Never did it before like that. We'll see if this changes anything. I doubt it. Something bothers them. The smaller one has been slowly developing gill curl on both gills on the top. Is this a sign of impaired breathing? They got visibly thinner. The only other one that doesn't feed in the tank is the corruscans. All others feed.