Kole Tang cleaning Hippo Tang?

smartwater101

New member
I added a small Hippo to the tank recently and noticed the existing Kole and it seem to get along quite well, exploring the tank together. Earlier today I noticed something that, at first, thought was aggression... The Kole was nipping at the Hippo...

I watch and realized it was very light nipping and the Hippo Tang was"leaning in" towards the Kole. In the same way it leans into cleaner shrimp for cleaning. Afterwards they went back to chillin', swimming around the tank together.

I've kept Tangs over the many years of having tanks, but never seen that behavior before. Is this common?
 
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