My friends brother got two bettas about a year ago. He never changes the water so it smells gross and mounds
of food floats everywhere. The water is cloudy and it's a 2.5 gallon. He has a small but cheap little filter that doesn't really do it's job. He already killed the red betta
but the blue one is still alive.
Back when the red one was still alive, he got under the divider and tore the blue one's fins up. Plus, his fins are mostly gone from fin rot and he's lethargic. On top of it all, one of his pectoral fins is almost completely gone. It just breaks my heart everytime I go to that house and see that pitiful betta.
I'm planning to write the brother up a little paper of how to treat the betta for the fin rot and help his fins grow back, how often to do water changes, and how much to change out. If there's any other info you think I should add just tell me.
I don't want to get any info wrong so I thought I'd ask you guys.