Well I bought him from my local fish store a few days ago and all he does is lay on the sand and look dead until I touch him and then he ends up in the same place every 20 minutes
It's likely stressed out and wants a safe place where it can acclimate. And as another pointed out, your water could be off.
Stop reaching in and touching it, that's even more stressful.
Did you research your new fish at all and find out what it needs before you bought it? It would seem not.
Tropical Fish for Freshwater Aquariums: Black Ghost Knifefish
QUICK STATS Minimum Tank Size: 50 gallons
Care Level: Moderate
Temperament: Semi-aggressive
Water Conditions: 73-80° F, KH 0-10, pH 6.5-7.0
Max. Size: 1' 6"
Color Form: Black
Diet: Carnivore
Origin: South America
Family: Apteronotidae
What do these Quick Stats mean? Click here
overview
The Black Ghost Knifefish is a member of the
Apteronotidae family and the speckled knifefish group. It is considered a true bony fish. When properly cared for, the Black Ghost Knifefish can reach well over one foot in length. It possesses a weak electrical organ at the caudal peduncles which is used to locate food.
It requires a minimum of a 50 gallon tank with excellent filtration. It is generally timid and reclusive, preferring a fine-gravel-bottom aquarium with plenty of roots and rocks for hiding places, as well as subdued to dark lighting. To better appreciate this fish, many hobbyists will purchase a "ghost tube," a clear plastic tube that facilitates viewing during the day. Once accustomed to its surroundings, the Black Ghost Knifefish can become incredibly tame and trusting to the point of being hand-held. It does well with other, larger species of a peaceful nature, but may be aggressive towards those of similar or smaller size.
Carnivorous, the Black Ghost Knifefish will eat all types of live foods including meat, chopped earthworms, as well as frozen and flaked foods.