Sounds like he's actually better off than many poor bettas! He's got clean, warm water and people who are about him! If you have any pellets or bloodworms from your other tanks try him with those, bettas often take better to pellets than flakes. And if he is a betta he will eat bloodworms
Even if he doesn't eat for a few days, don't worry. They do last a lot longer without food than you would think.
Good luck with him, sounds like you're doing an awesome job! And I'm sure in the end that you'll fall in love with him and want to keep him
Good luck with him, sounds like you're doing an awesome job! And I'm sure in the end that you'll fall in love with him and want to keep him


