Xiphophorus kallmani

Xiphophorus kallmani
Systematics
Order : Toothpies (Cyprinodontiformes) Subordination : Cyprinodontoidei Family : Viviparous toothcarps (Poeciliidae) Subfamily : Live-bearing toothcarps (Poeciliinae) Genre : Xiphophorus Type : Xiphophorus kallmani
Scientific name
Xiphophorus kallmani
Meyer & Schartl , 2003

Xiphophorus kallmani is a freshwater fish of the family of viviparous tooth-carps . It is closely related to the common swordtail ( Xiphophorus hellerii ). The species was first scientifically described in 2003. The specific epithet was given in honor of the ichthyologist Klaus D. Kallman .

features

It is a large representative of the genus Xiphophorus , the fish reach a standard length of 8.5 cm. The basic body color is gray-brown in both sexes, and brass-yellow in the lower half of the body. There are one to four dark red horizontal stripes on the sides, with the stripe along the middle of the body very distinct. The fins are mostly colorless, only in the dorsal fin there are two rows of brownish-red points. The male sword is colored golden yellow and edged with black. In sexually active males, the pectoral and pelvic fins and the gonopodium are orange-yellow in color.

Occurrence and way of life

View of the Catemaco lake

Xiphophorus kallmani is endemic to Lake Catemaco . The lake is surrounded by mountains at an altitude of 340 m in the Mexican state of Veracruz . The swordtail occurs there together with some other viviparous toothcarps that are also endemic to the lake: Xiphophorus milleri , Poecilia catemaconis , Poeciliopsis catemaco and Heterandria tuxtlaensis . Other fish species found there are Astyanax fasciatus , Cichlasoma fenestratum , Rhamdia guatemalensis and Dorosoma petenense .

Systematics

The species is part of the group of the southern swordtail, which includes the following species in addition to Xiphophorus kallmani :

• Xiphophorus alvarezi
• Swordtail ( Xiphophorus hellerii )
• Xiphophorus mayae
• Xiphophorus signum

The cladogram shows the relationships within the group established on the basis of DNA tests:

	Xiphophorus alvarezi      Swordtail ( Xiphophorus hellerii )      Xiphophorus mayae      Xiphophorus signum      Xiphophorus kallmani

Individual evidence

1. ↑ Laguna Catemaco, Veracruz on catemaco.info (English / Spanish). Retrieved February 5, 2016.
2. ↑ Harro Hieronimus: News from the Catemacosee - Heterandria tuxtlaensis as a new endemic poeciliide . In: DGLZ Rundschau 35, No. 3, 2008, ISSN  0938-7455 , pp. 55-57.

literature

• Manfred K. Meyer, Manfred Schartl: Xiphophorus kallmani sp. n. - a new species of swordtail from Mexico (Teleostei, Cyprinodontiformes, Poeciliidae). In: Zoologische Abhandlungen 53, 2003, ISSN  0375-5231 , pp. 57-64.

Web links

• Xiphophorus kallmani on Fishbase.org (English)