Something got into my sorority (& males' tank by cross-contamination) that is wiping out all of my bettas. The catfish are fine.
I'm going to wait and see if the rest die b/f taking the whole tank down. Beats me if I'll get a betta again. I love them b/c they aren't schooling fish; they are all off on their own little agendas- sneaking up on a catfish, looking at snails, exploring the tank, begging for food... it makes them so much more endearing than other fish.