Cleaner wrasse eating Nori?

[Jeox]

So, I have a cleaner wrasse (who is actually eating VERY well) and one of his favorite foods is dried seaweed. This seems very unusual to me. Am I missing something, or is this fish just weird?

 

[BIGgourami]

i have bar gobies that do the same

and the panther and louti groupers at work do too

 

[skene]

Most aquaria fish are omnivores, and will eat seaweed. Unless otherwise noted as predatory fish (lionfish, sharks, rays, eels, etc)

 

[Jeox]

Most aquaria fish are omnivores, and will eat seaweed. Unless otherwise noted as predatory fish (lionfish, sharks, rays, eels, etc)

Thats what confused me.
I thought cleaner wrasse ONLY ate parasites off of other fish, other than the rare few that accept other foods in captivity.