Biology:Scleromystax
Scleromystax is a genus of fish in the family Callichthyidae endemic to small tributaries from several coastal river basins draining the southern and southeastern regions in Brazil.[1] Most of the species of Scleromystax are highly sexually dimorphic; males have developed odontodes inserted in fleshy papillae on the preopercular-opercular region and the dorsal and pectoral fins are 2–3 times as long as those of females.[1] S. salmacis is an exception, as its sexually dimorphic features are subtle and non-remarkable.
Taxonomy
The species of Scleromystax were previously classified within the genus Corydoras. However, Scleromystax species are now thought to be more closely related to Aspidoras in a tribe called Aspidoradini.[2] Although the monophyly of Scleromystax has been demonstrated, phylogenetic relationships of its species remains obscure. In addition, the taxonomic status of its species are only partially resolved.[1]
Species
There are currently 7 recognized species in this genus:[3]
- Scleromystax barbatus (Quoy & Gaimard, 1824)
- Scleromystax lacerdai (Hieronimus, 1995)
- Scleromystax macropterus (Regan, 1913)
- Scleromystax prionotos (Nijssen & Isbrücker, 1980)
- Scleromystax reisi M. R. Britto, Fukakusa & L. R. Malabarba, 2016[4]
- Scleromystax salmacis M. R. Britto & R. E. dos Reis, 2005
- Scleromystax virgulatus (Nijssen & Isbrücker, 1980)
References
- ↑ 1.0 1.1 1.2 Britto, M.R. & Reis, R.E. (2005): A new Scleromystax species (Siluriformes: Callichthyidae) from coastal rivers of Southern Brazil. Neotropical Ichthyology, 3 (4): 481–488.
- ↑ Britto, M.R. (2003): Phylogeny of the subfamily Corydoradinae Hoedeman, 1952 (Siluriformes: Callichthyidae), with a definition of its genera. Proceedings of the Academy of Natural Sciences of Philadelphia, 153 (1): 119–154.
- ↑ Eschmeyer, William N.; Fricke, Ron; van der Laan, Richard, eds. "Species in the genus Scleromystax". California Academy of Sciences. http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatget.asp?tbl=species&genus=Scleromystax.
- ↑ Britto, M.R.; Fukakusa, C.K.; Malabarba, L.R. (2016). "New species of Scleromystax Günther, 1864 (Siluriformes: Callichthyidae) - extending the meridional distribution of genera endemic to the Atlantic Forest". Neotropical Ichthyology 14 (3). doi:10.1590/1982-0224-20150158.
Wikidata ☰ Q1756368 entry
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