columnaris

hi! i took home a betta fish yesterday from petco that was NOT doing well at all. ive been doing research all day and i think he has velvet, swim bladder disease, and columnaris. hes not eating, has little black spots on his fin, a med sized wooly white patch and redness on his sides, and he has...

So I posted about my betta awhile ago, and I didn't really get any useful information back...I had no idea what was wrong with him other than fin rot. I didn't think the white crust on his fin was columnaris because it wasn't fuzzy. It didn't look like the pictures. I treated him for fungus...