Cheirodon interruptus

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Cheirodon interruptus
Cheirodon interruptus.JPG
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Characidae
Genus: Cheirodon
Species:
C. interruptus
Binomial name
Cheirodon interruptus
(Jenyns, 1842)
Synonyms [2]
  • Tetragonopterus interruptus Jenyns, 1842
  • Chirodon monodon Cope, 1894
  • Cheirodon meinkeni Ahl, 1928
  • Cheirodon leuciscus Ahl, 1936
  • Hyphessobrycon nigrifrons Ahl, 1936
  • Pedalibrycon felipponei Fowler, 1943

Cheirodon interruptus, the Uruguay tetra or mojarrita, is a species of freshwater ray-finned fish, a characin, belonging to the family Characidae. This fish is found in South America.

Contents

Taxonomy

Cheirodon interruptus was first formally described in 1842 by the English clergyman and naturalist Leonard Jenyns with its type locality given as Laguna del Diario at 34°54'S, 55°00'W in Maldonado, Uruguay. [2] The genus Cheirodon is classified in the subfamily Cheirodontinae [3] which is classified within the family Characidae in the order Characiformes. [4]

Etymology

Cheirodon interruptus is classified in the genus Cheirodon, a name which is a combination of the Greek cheír, which means "hand", and "odon", meaning tooth. This refers to the teeth of the type species of the genus, C. pisciculus , which are dilated at their tips with at least 5 subconoical points on each tooth, with the middle point being longer than the others, showing a resemblance to a hand. The specific name, interruptus, means "interrrupted" in Latin, a reference to the short lateral line of this species. [5]

Description

Cheirodon interruptus has fusiform shaped body with a maximum standard length of 5.8 cm (2.3 in). The dorsal fin has a single spine and 10 soft rays while the anal fin has 2 spines and 18 soft rays. [6]

Distribution and habitat

Cheirodon interruptus is found in South America. It is native to the Uruguay River system, the lower Paraná basin and coastal rivers in southern Brazil, Uruguay and northern Argentina. It has been introduced to Central Chile. The Uruguay tetra is found ineutropicarea sof stream, lagoons and flooded area where there is abundant aquatic vegetation. [1]

Biology

Cheirodon interruptus feeds on plant ramnants, algae and aquatic invertebrates. They breed in both the autumn and the spring. [1]

References

  1. 1 2 3 Lima, F. (2023). "Cheirodon interruptus". IUCN Red List of Threatened Species . 2023 e.T186323A1811316. doi: 10.2305/IUCN.UK.2023-1.RLTS.T186323A1811316.en . Retrieved 26 September 2025.
  2. 1 2 Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Cheirodon". Catalog of Fishes . California Academy of Sciences . Retrieved 25 September 2025.
  3. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Cheirodontinae". Catalog of Fishes . California Academy of Sciences . Retrieved 26 September 2025.
  4. Richard van der Laan & Ronald Fricke (eds.). "Eschmeyer's Catalog of Fishes Classification". Eschmeyer's Catalog of Fishes . California Academy of Sciences . Retrieved 26 September 2025.
  5. Christopher Scharpf (31 August 2025). "Family CHARACIDAE: Subfamily CHEIRODONTINAE Eigenmann 1915 (Cheirodontines)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. Retrieved 27 September 2025.
  6. Froese, Rainer; Pauly, Daniel (eds.). "Cheirodon interruptus". FishBase . April 2025 version.