Harttia

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Harttia
Harttia loricariformis.png
Harttia loricariformis
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Loricariidae
Subfamily: Loricariinae
Genus: Harttia
Steindachner, 1877 [1]
Type species
Harttia loricariformis
Steindachner, 1877 [1]
Synonyms [1]

Harttia is a genus of freshwater ray-finned fish is a species of freshwater ray-finned fishes belonging to the family Loricariidae, the mailed catfishes, and the subfamily Loricariinae, the armored suckermouth catfishes. The species in this genus are founsd in South America.

Contents

Etymology

The genus name comes from Charles Frederick Hartt (1840–1878), a geologist, paleontologist and naturalist, who collected the many specimens during the Thayer Expedition to Brazil in the years 1865–1866. [2]

Taxonomy

As of 1997, Harttia was considered a monophyletic taxon. [3] However, Harttia is in need of revision. For example, the synonymy of Cteniloricaria with Harttia was questionable because it rested solely on the characteristics of Harttia fowleri without considering the type species of Cteniloricaria. [4]

Species

Harttia contains the following recognized species: [5]

Distribution and habitat

Distribution of Harttia species primarily includes rivers draining the Guyana Shield, coastal rivers in northeastern Brazil, and the Amazon River basin. [4] The greatest species diversity of Harttia, occurs in the Pre-Cambrian Brazilian Shield region. [3] Only H. platystoma and H. merevari are known from Venezuela. [6] These rheophilic fishes are found in the upper courses of rivers over rocky and sandy bottoms. [4] Harttia species are thought to be able to exploit areas with the strongest current, because of its extremely depressed body and long caudal peduncle, comparing to other species. [4]

Description

Sexual dimorphism includes hypertrophied odontodes on the pectoral fin spines and along the margins of the snout in mature males. [4]

Harttia exhibits considerable karyotypic diversity with chromosome numbers between 2n = 52 and 2n = 58 in the four species characterized. [4]

Ecology

Representatives of this genus seem to be open brooders. [4]

References

  1. 1 2 3 Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Loricariinae". Catalog of Fishes . California Academy of Sciences . Retrieved 6 January 2025.
  2. ↑ Christopher Scarpf (30 December 2025). "Family LORICARIIDAE: Subfamily LORICARIINAE Rafinesque 1815 (Suckermouth Armored Catfishes)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. Retrieved 7 January 2026.
  3. 1 2 Langeani, Francisco; Oyakawa, Osvaldo T.; Montoya-Burgos, Juan I. (2001). Schaefer, S. A. (ed.). "New Species of Harttia (Loricariidae, Loricariinae) from the Rio São Francisco Basin". Copeia. 2001 (1): 136–142. doi:10.1643/0045-8511(2001)001[0136:NSOHLL]2.0.CO;2.
  4. 1 2 3 4 5 6 7 Covain, Raphael; Fisch-Muller, Sonia (2007). "The genera of the Neotropical armored catfish subfamily Loricariinae (Siluriformes: Loricariidae): a practical key and synopsis" (PDF). Zootaxa . 1462: 1–40. doi:10.11646/zootaxa.1462.1.1.
  5. ↑ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Harttia". Catalog of Fishes . California Academy of Sciences . Retrieved 7 January 2026.
  6. ↑ Provenzano R., Francisco; Machado-Allison, Antonio; Chernoff, Barry; Willink, Phil; Petry, Paulo (2005). "Harttia merevari, a new species of catfish (Siluriformes: Loricariidae) from Venezuela". Neotropical Ichthyology. 3 (4): 519–524. doi: 10.1590/S1679-62252005000400009 .
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