The store said they’ve had him for a while so I’m not gonna worry about deworming. I’ll see if I can get a dozen ghost shrimp tomorrowHe is likely still stressed from the move. Lots of the predators sulk for a while after being moved. Based on the look of its mouth, it appears to be a small game hunter eating small fish and shrimps, or tearing flesh from a larger fish like a piranha. Maybe toss some guppies or ghost shrimp in there to curb his appetite.
Being a wild caught fish it also wouldn’t hurt to deworm him just in case.