Xiphypops

Xiphypops
Blue angelfish ( Centropyge argi )
Systematics
Spinefish (Acanthopterygii) Perch relatives (Percomorphaceae) Order : Surgeonfish (Acanthuriformes) Family : Angelfish (Pomacanthidae) Genre : Pygmy angelfish ( Centropyge ) Subgenus : Xiphypops
Scientific name
Xiphypops
Jordan , 1922

Xiphypops is a subgenus of the pygmy angelfish ( Centropyge ). Atotal of five species are included in Xiphypops , the three only dwarf angelfish species in the Atlantic, Centropyge aurantonotus and C. argi , which live in the tropical western Atlantic and occur from the Caribbean to the Brazilian coast, and C. resplendens , which is isolated on the island of Ascension in the South Atlantic lives, as well as their two closest relatives from the tropical Indo-Pacific , C. acanthops from the western Indian Ocean and C. fisheri from Hawaii .

features

Xiphypops are on average smaller than the pygmy angelfish of the subgenus Centropyge and only reach body lengths of six to eight centimeters. Your body is overall leaner and less high back. Your lacrimale has two or three strong thorns on its ventral edge. In Centropyge the ventral edge of the lacrimale is only lightly sawed.

species

• Orange-backed angelfish , Centropyge acanthops (Norman, 1922)
• Blue angelfish , Centropyge argi Woods & Kanazawa, 1951
• Yellow bridge angelfish , Centropyge aurantonotus Burgess, 1974
• Hawaiian angelfish , Centropyge fisheri (Snyder, 1904) ( type species )
• Ascension angelfish , Centropyge resplendens Lubbock & Sankey, 1975

Systematics

Centropyge acanthops

Xiphypops was established in 1922 by the American ichthyologist David Starr Jordan described , forming a monophyletic clade within the paraphyletic genus Centropyge . According to some scientists, Xiphypops should therefore receive genus status.

The following cladogram shows the position of Xiphypops within the Pomacanthidae and the Paraphyly of Centropyge :

Pomacanthidae

Centropyge aurantia , C. bicolor , C. flavipectoralis , C. flavissima , C. heraldi , C. multispinis , C. nox , C. tibicen      Centropyge bispinosa , C. interrupta , C. loricula , C. multicolor , C. potteri      Xiphypops      Lyra angelfish ( Genicanthus )      Smoked angelfish ( Apolemichthys )      Paracentropyge      Apolemichthys arcuatus + Centropyge colini + C. narcosis      Angelfish ( Holacanthus )      Peacock angelfish ( pygoplites )      Real angelfish ( Pomacanthus )      Velvet angelfish ( Chaetodontoplus )

literature

• Michelle Gaither, Jennifer K. Schultz, David R. Bellwood, Richard L. Pyle, Joseph D. DiBattista, Luiz A. Rocha, Brian W. Bowen: Evolution of pygmy angelfishes: recent divergences, introgression, and the usefulness of color in taxonomy . Molecular Phylogenetics and Evolution, February 2014, doi: 10.1016 / j.ympev.2014.01.017 .
• Ingo Schindler & Frank Schneidewind: Revision of Centropyge fisheri (SNYDER, 1904) (Teleostei, Pomacanthidae) . Zeitschrift für Fischkunde, Volume 7, Issue 1, November 30, 2004, pages 31-42.