what to do with my 20g SW tank?

[CleverBs]

I have a 20g saltwater tank sitting in my basment thats all set up with a Sponge filter, Heater, Sand, Live rock, non reef light, But i just dont know what to keep in it. I want just like 1 cool fish in it I was thinking maybe an angler or something maybe a mantis shrimp? what does everyone think?

 

[Gboy66]

I'd do sea horses and pipefish Always wanted to attempt those

 

[Mikenhecker1]

Be careful with mantis shrimp. They will shatter the glass. But I always wanted to try them too.

 

[CleverBs]

I'd do sea horses and pipefish Always wanted to attempt those

little more work then I am looking to do. But yeah I thought about pipefish