PseudomonacanthusPseudomonacanthus is a genus in the filefishes native to the Indian and western Pacific oceans.SpeciesThere are currently four recognized species in this genus:Pseudomonacanthus elongatus Fraser-Brunner, 1940 Pseudomonacanthus macrurus Pseudomonacanthus peroni Pseudomonacanthus tweediei Fraser-Brunner, 1940