Dionda

Dionda is the genus of desert minnows, small fish belonging to the family Cyprinidae.[1] They are native to fresh waters in the United States and Mexico. Their range is centered in the Rio Grande basin, but they also occur in associated systems, including Nazas–Aguanaval of north–central Mexico, and Nueces, San Antonio and Colorado of Texas.[2]

Desert minnows
Devils River minnow (Dionda diaboli)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae
Subfamily: Leuciscinae
Genus: Dionda
Girard, 1856
Type species
Dionda episcopa
Girard, 1856
Species

6, See text.

These are small fish, no more than 9 cm (3.5 in) long, and overall brownish-silvery with a distinct dark horizontal line from the head to the tail base.[1] They are believed to feed primarily on algae.

Species

There are currently six species in this genus.[1] Additionally, the species now placed in Tampichthys were formerly included in Dionda instead.[2]

  • Dionda argentosa Girard, 1856 (Manantial roundnose minnow)
  • Dionda diaboli C. Hubbs & W. H. Brown, 1957 (Devils River minnow)
  • Dionda episcopa Girard, 1856 (Roundnose minnow)
  • Dionda melanops Girard, 1856 (Spotted minnow)
  • Dionda nigrotaeniata (Cope, 1880) (Guadalupe roundnose minnow)
  • Dionda serena Girard, 1856 (Nueces roundnose minnow)
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References
  1. Froese, Rainer and Pauly, Daniel, eds. (2018). Species of Dionda in FishBase. September 2018 version.
  2. Schönhuth, S.; I. Doadrio; O. Dominguez-Dominguez; D.M. Hillis; R.L. Mayden (2008). "Molecular evolution of southern North American Cyprinidae (Actinopterygii), with the description of the new genus Tampichthys from central Mexico". Molecular Phylogenetics and Evolution. 47 (2): 729–756. doi:10.1016/j.ympev.2007.11.036.


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