Acestrorhynchidae

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Acestrorhynchidae
Acestrorhynchus falcirostris

Acestrorhynchus falcirostris

Systematics
Overcohort : Clupeocephala
Cohort : Otomorpha
Sub-cohort : Ostariophysi
Otophysa
Order : Tetras (Characiformes)
Family : Acestrorhynchidae
Scientific name
Acestrorhynchidae
Eigenmann , 1912

The Acestrorhynchidae are a family from the order of Characins in South America is located. The family was introduced in 1912 by the German-American ichthyologist Carl H. Eigenmann with the spindle tetras ( Acestrorhynchus ) as the only genus, but today consists of three subfamilies with a total of seven genera. One of these subfamilies, the Roestinae , originally belonged to the wolf tetra family (Cynodontidae). The close relationship between these groups is based exclusively on the comparison of DNA sequences from two genes in mitochondrial DNA and three genes from the cell nucleus and has not yet been supported by morphological features.

description

The fish are elongated like a pike (spindle tetra) or have a more or less oval body, often with a more curved belly line (Heterocharacinae). The largest spindle tetra can be 40 cm long, the species of the other two subfamilies remain much smaller. All of them feed on carnivore, the spindle tetra on smaller fish, the rest mainly on insects (approach food).

Systematics

There are currently 27 species in seven genera in the Acestrorhynchidae family.

The Acestrorhynchidae are probably the sister group of the Iguanodectidae .

literature

  • Oliveira, C., GS Avelino, KT Abe, TC Mariguela, RC Benine, G. Orti, RP Vari & RM Correa e Castro, 2011. Phylogenetic relationships within the speciose family Characidae (Teleostei: Ostariophysi: Characiformes) based on multilocus analysis and extensive ingroup sampling. BMC Evolutionary Biology 2011, 11: 275 doi : 10.1186 / 1471-2148-11-275

Individual evidence

  1. ^ Joseph S. Nelson : Fishes of the World . John Wiley & Sons, 2006, ISBN 0-471-25031-7 , page 160.
  2. ^ Menezes, NA and CAS de Lucena, 1998. Revision of the subfamily Roestinae (Ostariophysi: Characiformes: Cynodontidae). Ichthyological Exploration of Freshwaters. 9 (3): 279-291.
  3. ↑ Acestrorhynchus falcirostris on Fishbase.org (English)

Web links

Commons : Acestrorhynchidae  - Collection of images, videos and audio files