Xenisthmidae

Collared wrigglers are perciform fishes in the family Xenisthmidae. They are native to the Indian and Pacific Oceans, where they are mostly reef-dwelling.

Species
The 10 species in 7 genera are:
 * Genus Allomicrodesmus Schultz, 1966
 * Allomicrodesmus dorotheae Schultz, 1966


 * Genus Gymnoxenisthmus Gill, Bogorodsky & Mal, 2014
 * Gymnoxenisthmus tigrellus Gill, Bogorodsky & Mal, 2014


 * Genus Kraemericus
 * Kraemericus smithi Menon & Talwar, 1972


 * Genus Paraxenisthmus Gill & Hoese, 1993
 * Paraxenisthmus springeri Gill & Hoese, 1993


 * Genus Rotuma Springer, 1988
 * Rotuma lewisi Springer, 1988


 * Genus Tyson Springer, 1983
 * Tyson belos Springer, 1983


 * Genus Xenisthmus Snyder, 1908
 * Xenisthmus africanus Smith, 1958 (the flathead wriggler or African wriggler)
 * Xenisthmus balius Gill & Randall, 1994
 * Xenisthmus chi Gill & Hoese, 2004
 * Xenisthmus clarus (Jordan & Seale, 1906)
 * Xenisthmus eirospilus Gill & Hoese, 2004
 * Xenisthmus polyzonatus (Klunzinger, 1871) (the bull's-eye wriggler or polyzonate wriggler) is peach-coloured with a bull's-eye-like spot on its tail.
 * Xenisthmus semicinctus Gill & Hoese, 2004