XenisthmidaeCollared wrigglers are perciform fishes in the family Xenisthmidae. They are native to the Indian and Pacific Oceans, where they are mostly reef-dwelling.SpeciesThe 10 species in 7 genera are: Genus Allomicrodesmus Schultz, 1966 Genus Gymnoxenisthmus Gill, Bogorodsky & Mal, 2014 Genus Kraemericus Genus Paraxenisthmus Gill & Hoese, 1993 Genus Rotuma Springer, 1988 Genus Tyson Springer, 1983 Genus Xenisthmus Snyder, 1908