Kuhlia xenura

Hawaiian flagtail
Kuhlia xenura
Not evaluated (IUCN 3.1)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Kuhliidae
Genus: Kuhlia
Species: K. xenura
Binomial name
Kuhlia xenura
(D. S. Jordan & C. H. Gilbert, 1882)
Synonyms
  • Xenichthys xenurus D. S. Jordan & C. H. Gilbert, 1882

Kuhlia xenura, the strange-tailed flagtail is a species of flagtail endemic to Hawaii, where it occurs in fresh, brackish, and marine waters. It can be found in tide pools, estuaries, and on reefs occurring over sand or rock. This species grows to a standard length of 22.2 cm (8.7 in).[1]

Taxonomy

The strange-tailed flagtail was previously confused with the Hawaiian flagtail until 2001. It was first described as Xenichthys xenurus on the basis of a specimen mistakenly thought to have come from San Salvador, El Salvador.[2] For over a century, the name Xenichthys xenurus was overlooked in the literature and K. xenura was confused with K. sandvicensis by many authors.[3][4][5]

In 2001, the ichthyologist John Ernest Randall and his wife Helen Randall reviewed all nominal flagtail species from the Pacific Ocean. They found out that two species had been lumped together under Kuhlia sandvicensis, one of which had been misidentified as the freshwater K. marginata by some authors (the true K. sandvicensis). They found out that specimens of the common flagtail species from the Hawaiian Islands misidentified as K. sandvicensis matched the description of Xenichthys xenurus and thus Kuhlia xenura became the correct name for one of the two flagtail species from Hawaii.[6]

Description

The strange-tailed flagtail can be distinguished from the Hawaiian flagtail in having a large eye relative to the size of the head, a straight dorsal head profile, and an olive/bronze tinge along the back.[7]

References

  1. Froese, Rainer and Pauly, Daniel, eds. (2013). "Kuhlia xenura" in FishBase. August 2013 version.
  2. Jordan, D. S. and C. H. Gilbert 1882. Description of a new species of Xenichthys (Xenichthys xenurus) from the west coast of Central America. Proceedings of the United States National Museum v. 4 (no. 252): 454.
  3. Gosline, W.A. and V.E. Brock, 1960. Handbook of Hawaiian fishes. University of Hawaii Press, Honolulu. 372 p. + 277 figs.
  4. Randall, J.E., 1985. Guide to Hawaiian reef fishes. Harrowood Books, Newtown Square, PA 19073, USA. 74 p.
  5. Randall, J.E., 1996. Shore fishes of Hawai'i. Natural World Press, Vida, Oregon. 216 p.
  6. Randall, J.E. and H.A. Randall, 2001. Review of the fishes of the genus Kuhlia (Perciformes: Kuhliidae) of the Central Pacific. Pac. Sci. 55(3):227-256.
  7. Randall, J. E. (2007). Reef and Shore Fishes of the Hawaiian Islands. ISBN 1-929054-03-3
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