The tiger shovelnose is Pseudoplatystoma, both P.tigrinum and P.fasciatum are known as tiger shovelnoses.
Im sure you already know but they grow to over 40" and will eat any fish smaller than themselves, they are capable of swallowing prey their own size if left alone to finish the meal.
As open water predators they need a long and wide aquarium to give them room to move and not feel cramped, for a full grown adult fish a tank 10ft long by 4ft wide would be the minimum recomended size for just one fish.