Yellow Tail Damsel?

[Betta5]

Could I house 1 or 2 YTDs in a 30 gallon?

I hear they are the lesser of the evil damsels. Would any small fish be able to live with them? Firefish? bi colour blenny? Clowns etc

 

[Betta5]

Is it posible to have a mix of like 6 different small damsels in a 30 gallon or is it to small? If I can, what are some small colourful damsels?

Its a fish only BTW