I have a little graveyard in my garden. Sticks, stones & shells are the grave markers. I'm not sure what religion bettas are ;0) or I could make little headstones.
I'm not sure why the bettas are afflicted wheras the catfish look just fine (when I can see them). Are the cats considered hosts? Regardless, I can't fight what I can't diagnose.
4 bettas: Butch, 3-year-old violet male PK EE & 3 girls in a 30 gal sorority. I do not name the girls anymore! 1/2 of them die within a month.
30 gal: 9 Oto cats, 4 Ocellifer cats. Inverts: Cherry shrimp & 2 assasin snails.
10 gal.: Butch, his 5 oto cats, 3 assasin snails, and a few snails the assassins haven't caught.