Creagrutus zephyrus

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Creagrutus zephyrus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Stevardiidae
Genus: Creagrutus
Species:
C. zephyrus
Binomial name
Creagrutus zephyrus
Vari & Harold, 2001

Creagrutus zephyrus is a species of freshwater ray-finned fish, a characin, belonging to the family Stevardiidae. [2] [1]

Contents

Distribution

It is native to South America, occurring in the central and upper portions of the Negro River. The Negro River is one of the largest tributaries of the Amazon, draining vast areas of southern Venezuela, Colombia, and northwestern Brazil before joining the Amazon near Manaus. Its waters are characterized by their dark coloration, resulting from dissolved organic matter leached from surrounding forests, and it flows through extensive tracts of rainforest that harbor exceptional biodiversity. The upper and central reaches of the basin encompass a mosaic of habitats, including blackwater streams, floodplain lakes, and seasonally inundated forests. This region is recognized as a critical component of the Amazon basin, serving as both a biogeographic corridor and a center of endemism. The species’ occurrence in these reaches underscores its ecological role within one of the most diverse and hydrologically complex freshwater systems in the world.

Size

This species reaches a length of 4.0 cm (1.6 in). [3]

Etymology

The species name derives from the Latin term for ‘west wind,’ in reference to its distribution in the western portion of a range that also includes the closely related Creagrutus melanzonus and Creagrutus xiphos . [4]

References

  1. 1 2 IUCN (2021-03-04). Creagrutus zephyrus: Lima, F.: The IUCN Red List of Threatened Species 2023: e.T164540458A164540489 (Report). International Union for Conservation of Nature. doi:10.2305/IUCN.UK.2023-1.RLTS.T164540458A164540489.en.
  2. Vari, R.P. and A.S. Harold, 2001. Phylogenetic study of the Neotropical fish genera Creagrutus Günther and Piabina Reinhardt (Teleostei: Ostariophysi: Characiformes), with a revision of the Cis-Andean species. Smith. Cont. Zool. 613:1-239.
  3. Froese, Rainer; Pauly, Daniel (eds.). "Creagrutus zephyrus". FishBase . February 2025 version.
  4. Christopher Scharpf & Kenneth J. Lazara (22 September 2018). "Family STEVARDIIDAE Gill 1858 (Stevardiids)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 15 December 2025.