Rhadinoloricaria
| Rhadinoloricaria | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Loricariidae |
| Subfamily: | Loricariinae |
| Genus: | Rhadinoloricaria Isbrücker & Nijssen, 1974[1] |
| Type species | |
| Rhadinoloricaria macromystax | |
| Synonyms[1] | |
|
Apistoloricaria Isbrücker & Nijssen, 1986 | |
Rhadinoloricaria is a genus of freshwater ray-finned fishes belonging to the family Loricariidae, the mailed catfishes, and the subfamily Loricariinae, the armored suckermouth catfishes. The catfishes in thsi genus are endemic to South America.[2] It was considered to be monotypic until the 2020 discovery of a second species.[3]
Rhadinoloricaria is part of the Pseudohemiodon group of the tribe Loricariini in the subfamily Loricariinae.[2] Apistoloricaria and Crossoloricaria include fish that are very similar to Rhadinoloricaria, and it has been proposed that the former two genera be synonymized with the latter.
Species
There are currently nine recognized species:[4]
- Rhadinoloricaria andaki Provenzano, Chaves-Moreno, Ordoñez & Ortega-Lara, 2024
- Rhadinoloricaria bahuaja (F. Chang & E. Castro, 1999)
- Rhadinoloricaria condei (Isbrücker & Nijssen, 1986)
- Rhadinoloricaria laani (Nijssen & Isbrücker, 1988)
- Rhadinoloricaria listrorhinos (Nijssen & Isbrücker, 1988)
- Rhadinoloricaria macromystax (Günther, 1869)
- Rhadinoloricaria ommation (Nijssen & Isbrücker, 1988)
- Rhadinoloricaria rhami (Isbrücker & Nijssen, 1983)
- Rhadinoloricaria stewarti Provenzano & Barriga Salazar, 2020
Distribution and habitat
Representatives of this genus are distributed in the upper Amazon and Orinoco drainages, along the Atlantic slope of the Andes.[5]
Appearance and ecology
These fish range from 10–14.2 centimetres (3.9–5.6 in) SL.[6] In members of this genus and other closely related genera, the body is strongly depressed and the pelvic fins are used for locomotion, enabling these fish to appear to "walk" on the substrate.[5] Sexual dimorphism is apparent through differentiated lip structure. The lip surfaces of the male are rather papillose while those of the female are filamentous.[5]
These species are abdomino-lip brooders; eggs are laid in a single layered mass, and are attached to the surface of the lower lip and abdomen of the male.[5]
References
- ^ a b c Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Loricariinae". Catalog of Fishes. California Academy of Sciences. Retrieved 3 March 2026.
- ^ a b 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.
- ^ Provenzano-Rizzi, Francisco; Barriga-Salazar, Ramiro (2020-05-21). "New finding of Rhadinoloricaria macromystax (Siluriformes: Loricariidae): redescription of the genus and description of a new species from Ecuador". Zootaxa. 4779 (4): 485–500. doi:10.11646/zootaxa.4779.4.2. ISSN 1175-5334.
- ^ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Rhadinoloricaria". Catalog of Fishes. California Academy of Sciences. Retrieved 14 September 2025.
- ^ a b c d 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. Retrieved 2009-06-25.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Rhadinoloricaria". FishBase. December 2011 version.