My Foxface has always been my favorite fish in my tank but yesterday he seem to be acting a bit lethargic. This has continued into today as well. He is not eating or swimming, just laying and breathing heavy. He has no visible signs off illness that I can see. My parameters are good, 0 ammonia, 0 nitrites, and 0 nitrates. Calcium and Alkalinity levels are good. I dose Calcium and Alkalinity two to three times a week depending on my readings and Iodine once a week.
Do you guys have any thoughts what might be killin
g my fish?

Do you guys have any thoughts what might be killin
