H. notatus would have black spots on the gills and yellow under the chin. If the fish has eight stress bars I'd say H. sp. Inirida, which look like notatus but have red/maroon spots instead of black. If it's got nine bars, it's either a hybrid or a really colorful H. efasciatus. I think the tank lighting is making its colors look more vivid than they actually are (judging by the color of the other severum and of the tank decorations around it).
It's not a rotkeil.