What are parrot fish doing when they look like kissing?

When parrotfish look like they're kissing, they're actually cleaning each other's scales. This behavior is called mutual grooming.

Here's why they do it:

* Parasite removal: Parrotfish, like many other fish, are susceptible to parasites. Mutual grooming helps them remove these parasites, keeping them healthy.

* Social bonding: This activity strengthens social bonds within the parrotfish community.

* Hygiene: It helps keep their scales clean and free of debris.

So, while it might look like a romantic kiss, it's actually a very practical and hygienic behavior.