What should I get ?

[James M]

I have a 20 gallon with a six line and a damsel . I want an invert but don’t know what to get . Any suggestions?

 

[cristata.reef]

Might be kinda hard with the wrasse since they like to nip at things. You could probably get a skunk/blood cleaner shrimp if it's bigger than the wrasse. No feather/coco worms, nudibranchs/sea slugs, etc they'll be gone in an instant.