20 gallon tall fish only system stocking?

[Clownfish king]

I have a 20 gallon tall tank with nothing in it what should I get ? I want single “ spot light” fish 

[Firefish15]

Are you hoping to do a community tank, or a species-only set up?

[jservedio]

What about something like a Fu-Manchu Lionfish?

[Clownfish king]

A species only setup

 

[Firefish15]

Yeah, you could do a small predator or aggressive fish. Maybe also a painted frog fish or a dottyback.