Fish Rubbing Against Rocks

[William Morris]

In my 32gal Biocube I have a McCoskers Wrasse and a Purple Firefish.
From time to time I see them rub up against the rocks scratching themselves.
No apparent outward signs of any distress or disease.

Anything to be concerned about?

 

[theMeat]

Sounds like Ich. Keep an eye on it

 

[Humblefish]

Could be a parasite (such as ich) or a worm (such as flukes).

Do your fish target the body or more the gill area when they rub??

 

[SourAngelfish]

My fish had flukes a while back and they would always scratch near the gills, so look out for that.

 

[deedubz]

My first thought would be flukes (wrasses are notorious for bringing them in). Given that those are both colorful fish, and that wrasses have an uncanny ability to hide symptoms, I'd be on the lookout for head twitching and or excessive"yawning"

Any chance either of the fish would let you catch them? A freshwater dip could rule out flukes.