Fish?

I lost my coral beauty angelfish a little while back when I was on vacation.:mad: And I would like to get a new fish for my 75g semi predator tank. I currently have a medium sized snowflake eel, a small blue throught triggerfish, a small angelfish, a firefish, and a yellowtail damsel. I want to get another predator fish :fish:. I was looking at getting a frogfish but I was concerned that it would eat my other fish. Have anyone had experience with this fish? Also, I was looking at a fuzzy dwarf lionfish but people have told me they hide all day and you will never see them. Has anyone kept theis fish, and will they hide all the time or will he be out in the front of the tank? thx in advanced

-cooper