This doesn't even teach your brother responsibility. All it teaches him is that he can get away with animal abuse with no consequences. Sorry about the Betta, but I hope you are able to get the rest of his fish away from him and into good homes. Good luck!
Ares - My flare happy warrior
Castiel - My inquisitive crowntail
Sammie,Jackie, and Jamie - My fun loving peppered cories.
Touchstone - My sweet fool
Freyja - My beautiful girl