No rapid breathing or lethargy. Swimming normally, except for the flashing sometimes, (once in a great while, a fish will headshake or make a quick irratic swim burst). Then all normal. No visual issues or damage to any fish. Eating is all normal.
There are two tanks, one has a betta, honey gourami, siames algae eater, hillstream loach, neon tetras, porkchop rasboras, otocinclus, amano shrimp and snails. This time around Its been mostly the SAE, but saw an oto and the hillstream loach do it yesterday.
The other has congo tetras, rosy barbs, albino corydora, peacock eel, otocinclus, kuhli loaches, wood shrimp, and snails. I notice the barbs doing the most, but saw the corycat do it today.
Water parameters on this tank are the same as the other. Also stable, no changes.
I did cross contaminate a lot so ive been treating both tanks.