Parotocinclus prata is a species of freshwater catfish in the family Loricariidae, order Siluriformes. It was formally described in 2002 by A. C. Ribeiro, A. L. A. Melo, and E. H. L. Pereira. The species is endemic to Brazil, where it occurs in the Da Prata River, a tributary of the São Francisco River basin.
Taxonomy
- Kingdom: Animalia
- Phylum: Chordata
- Class: Actinopterygii
- Order: Siluriformes
- Family: Loricariidae
- Subfamily: Hypoptopomatinae
- Genus: Parotocinclus
- Species: Parotocinclus prata
Distribution and Habitat
Parotocinclus prata is known only from the Da Prata River system in the state of Minas Gerais, Brazil. The river is part of the larger São Francisco River basin, which drains a substantial portion of eastern Brazil. The species inhabits clear, fast‑flowing streams and creeks within densely forested areas. Typical substrates include rocks, pebbles, sand, and occasional leaf litter. In larger water bodies within its range, the fish may be found in areas with reduced flow and a more heterogeneous substrate.
Morphology
As a member of the genus Parotocinclus, P. prata possesses the characteristic armored plates covering its body and a ventrally positioned mouth adapted for scraping algae and biofilm from substrates. Specific morphological details, such as standard length, coloration, and meristic counts, are documented in the original species description (Ribeiro, Melo & Pereira 2002) and in subsequent ichthyological references (e.g., FishBase, PlanetCatfish).
Ecology
Parotocinclus prata is a benthic grazer, feeding primarily on periphyton, algae, and associated microorganisms. Its ecological role includes contributing to the control of algal growth and participating in nutrient cycling within its freshwater ecosystem. The species is adapted to well‑oxygenated, clear water conditions typical of forested headwater streams.
Conservation Status
There is currently insufficient information to assess the conservation status of Parotocinclus prata on the IUCN Red List. However, its limited distribution and dependence on pristine freshwater habitats suggest potential vulnerability to threats such as habitat degradation, water pollution, and hydrological alterations within the São Francisco River basin.
Etymology
The generic name Parotocinclus derives from Greek roots: “para” meaning “beside” or “near,” “otos” meaning “ear,” and “kylos” meaning “fish,” a reference to the morphological features of the group. The specific epithet prata refers to the Da Prata River, the type locality where the species was first collected.
References
- Ribeiro, A. C., Melo, A. L. A., & Pereira, E. H. L. (2002). Description of Parotocinclus prata (Siluriformes: Loricariidae) from the Rio da Prata, a tributary of the Rio São Francisco, Brazil. Journal of Fish Biology, 61(2), 415‑426.
- FishBase. Parotocinclus prata species summary. https://www.fishbase.se/summary/60385
- PlanetCatfish. Parotocinclus prata Cat‑eLog. https://www.planetcatfish.com/common/species.php?species_id=5247
- GBIF. Parotocinclus prata occurrence data. https://www.gbif.org/species/2340263
This entry reflects information available from peer‑reviewed taxonomic literature and reputable databases as of the latest update.