Lyertail anthias question

[m0nk3y69d]

I recently bought a pair of a mail and a female and they were doing great and the last few days both seem to hide a lot the mail will sit in the back of the tank on the bottom and the female will swim around a bit more but not a lot they both come out and eat at feeding time and if I'm net the tank they will come out the mail also seems to always be around the purple reef lobster and they don't seem to be bothered by each other dose anyone have any ideas on why they would do this

 

[BOWHUNTER4250]

These types of fish are a schooling community fish , they do better when their is at least 4 or more this way the dominent female will start to change to become a male i have 4 in my 180 and they are by far the most active fish i have

 

[m0nk3y69d]

The mail is larger then the female and I bought them as a pair

 

[m0nk3y69d]

And my tank is only a 55 and I'm working on my 75 so more then 2 I would think would be many