You got lucky in that whoever named the Green Terror was engaged in deceptive advertising practices. In the future avoiding fish with "Terror" and similar monikers would be a good idea! You shouldn't be asking for a list of species to avoid, far better to ask for a list of compatible species and stick to it. There are way too many species to name, and just because somebody forgets to name it doesn't mean it won't shred its tankmates! A few choices, assuming a large enough and properly scaped tank, would be Severums, Festivums, Dwarf (AND ONLY DWARF!!!) Pike Cichlids, and Acaras. There are lots more.