How big of a tank would i need to house these fish?

ok so the betta will bully the glowfish to death and eat ur shimp so this is a no go either get 6 glofish or get the betta and a GHOST shrimp they are nicer to them the glofish need 20 gallons and the betta and shimp will need a heater and a 10 gallon either get one or the other NOT BOTH or u will only end up with a betta