Iridecent shark, gets huge (3ft+) and eat meat (fish, shrimp, prawns etc). Will likely eat large cichlid pellets if you don’t wish to buy frozen sea food. Don’t keep it with small fosj as they are likely to get eaten.
It is a Pangasius type catfish, there are a couple of species sold as Iridescent Sharks. Identifying exact species is very difficult, but even the smallest of these will get too big for tanks under 10 feet in length. They need a lot of swimming room. Because they are also easily spooked, they often jump out or simply run into the end of the tank. This causes severe injury or even death. This is a fish that should not be sold in regular pet shops.