welcome to fishlore ceasarsmom! is the tank cycled? and yes, alot of what you described is natural for them..they are shy at first, especially going from a 25 gallon to a 55...take him a bit to grow some more muscles

LOL ..does he have other tank mates?? would love to see a pic of him ....id skip out on the live fish for food..hole in the head disease is very hard and a killer on them and bad feeders are a main cause for this.....unless you raise them yourself...mine get hikari pellets, then fresh raw shrimp that I put in my blender, and also blood worms...goodluck