Here is what Liveaquaria has to say:
The Hi-Hat, also known as High-Hat, has a shimmering silvery body marked by dark horizontal stripes and a tall anterior
dorsal fin.
It requires a peaceful community in a 70 gallon or larger aquarium with a sandy bottom, and abundant hiding places. It tends to hide during the acclimation process to the new aquarium until it feels secure. Regular meals consisting of a variety of live items such as black worms and brine shrimp and prepared meaty items should bring it out of hiding. The Hi-Hat will comb the sandy bottom looking for worms, crustaceans, and small fish if it is hungry. It may even eat the occasional fireworm.