yesterday my dad bought a new 150 gallon aquarium and the previous owner thought that he only had oscars and plecos in it but found this guy hanging out int the bottom. Does anyone happen to know what he is? He buries into the sand in this small medical tank I have and seems to enjoy being able to dig whenever he wants. I just don’t have any information on how to care for him and the previous owners have no idea what type of fish he is. If you have an idea drop it below!