Hello. I am unsure if this tank is too small for betta. I’m planning to get a heater, leaf hammock and moss balls soon. I’m not sure what size gallon is this (looks like a 5 gallon?) But once I have the money I’ll upgrade to a 20 gallon. I want my betta to be happy and live a long life. P.S I use a minI Christmas tree for scale if that helps.