125 Gallon tank with 7 inch Lyonsi, 6-7 inch Synspilum, 4 inch JD, 2 Vieja Ammonia at about 3 inches, 5 Clown Loaches and a 3-4 inch Firemouth -- 0ppm, Nitrite -- 0ppm, Nitrate -- 10-20ppm. Lyonsi has been acting pretty strange for the last few days. Normally active and swimming around, he dug a big hole in the middle of the tank under a driftwood and won't come out. Quit eating, which is VERY unusual for him as he could eat. Synspilum did the same thing under an ornament. The JD I guess did the same thing and only comes out to eat. Very strange. Few minutes ago, Lyonsi starts thrashing around at the top, hitting his head on the glass, I thought it was a fight--but there was nobody fighting with him. Then he swims to the bottom and puts his nose on the ground, won't right himself. He's still breathing, but he doesn't look like he's long for this world. All the other fish look fine. The Syn even came out and swam around for a few, which hasn't happened in days. Any idea what this is?
