Who Gives A Fish Forums

And no, those 'betta dividers' in tiny tanks aren't a solution. They're still stressed out by the presence of another fish, even if they can't fight. Just give 'em their own space.

One more thing: stop using tap water without conditioner. Chlorine will burn their gills, and that's a painful way to go. It's such an easy fix, just dose the water first.

Honestly, the best advice is to research before getting the fish. Too many people impulse-buy without knowing the basics, and the fish pays the price.