Sorry I'm not sure what type of breed this fish appears to be, the closest fish I've found that looks like it is the Striped Catfish (hope that helps!) I'm very worried, this is my first fish and I don't want it to starve :(
If that's freshwater then its a khuli loach which usually comes out and eats at night
Bottom night scavenger. If it is full of energy then it is eating. Do not overfeed out of worry and end up with polluted tank. Normally they eat the leftover crumbs of other fishes.