My betta has been looking pretty bad lately. For a long time he had this patch of lighter scales - not white, just lighter, and I assumed it was just part of his colors because he's a pet store "mutt" betta. But now the white scales are...missing. He has a huge chunk of his scales gone on his side - a red hole! If I didn't know better I'd say one of the other fish was hurting him, but my betta is king of the tank..the neon tetras are afraid of him, the zebra danio never pay any attention, and the cory catfish never leave the ground.
If I can get a good picture I will, I'm worried he's got maybe some kind of parasite? I looked up the disease page on fishlore and nothing seems to match.
I do 50% water changes every week because my tank is a bit overstocked...none of the other fish seem to be affected. The betta doesn't "flash" (rub against the tank or decorations) ever...I'm not sure what to do
