Wrasse for a 20g cube

[Windirmere]

Is a 20g cube to small to home a 6line wrasse as the soul inhabitant? I had a Yellow Corris wrasse in a 65g tank and am looking for a nano version. Loved the personality and the constant hunting over the live rock.
Other wise Im tempted to stay invert only, any other fish that have the same inquisitiveness and busyness as wrasses?

 

[Miami Reef]

I think a dottyback would be a much better fit because they can tolerate smaller tanks and are very inquisitive.

Live Aquaria says a 6 line needs a minimum of 55 gallons.

 

[Miami Reef]

An even better option IMO:

These fish are so full of personality. You can get a group and they’ll poke in and out of holes. Adorable.

 

[Miami Reef]

 

[Tamberav]

While they are active I probably would do it if it is the only fish. That takes potential aggression off the table. I would try to set the rock up to have lots of holes/nooks/crannies.

 

[i cant think]

Is a 20g cube to small to home a 6line wrasse as the soul inhabitant? I had a Yellow Corris wrasse in a 65g tank and am looking for a nano version. Loved the personality and the constant hunting over the live rock.
Other wise Im tempted to stay invert only, any other fish that have the same inquisitiveness and busyness as wrasses?

Why not go for this:

pseudocheiliNOPS ataenia. Not to be confused with Pseudocheilinus, yes these are possibly (I’m unsure if this is true) close cousins to pseudocheilinus but they aren’t even close to their aggression.