possible hosting

so iv had my pair of perculas for about 6 months now, and iv had an open brain coral right in the middle of the tank, just now i saw the female underneath of the brain just laying there i got alittle nervous and went up to look and she came out and was perfectly content, and then i stepped away and kept watching and she slid against the side of it, and then went under again and is now swimmign again could this be hosting or soemthing else?
And how can i tell if my female has eggs and is going to reproduce

 

Female needs to be about 2 years old.

Usually the male and female, the male more though will do aggressive cleaning in the area before a spawn.

They are probably just taking up a comfortable place to reside. Depending on how aggressive they are to the coral hosting them will determine if you need to take action and move the coral.

 

they werent too aggressive at all n nothing on top of it just under

 

I had a clown fish that used to lay down and sleep horizontal on my open brain.

Clown fish can get very passionate about their host and sometimes cause tissue damage in their efforts to snuggle too closely with it, or sometimes they spit too much sand on the surface of the coral and cause an issue, worth watching for.

 

i didnt know about the sand thanks for the heads up, right now they arnt sleeping in it just in the back of the aquarium. it just looked like the start of them hosting but i dont know