Lamontichthys
| Lamontichthys | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Lamontichthys | ||||||||||||
| P. Miranda-Ribeiro , 1939 |
Lamontichthys is a genus of the armor catfish (Loricariidae) that is native to South America.
features
Sexual differences in Lamontichthys include enlarged odontodes of the pectoral fin spines in adult males. All species of Lamontichthys have a pectoral fin with seven pectoral fin rays, in contrast to the rest of the Loricariinae species, which have a pectoral fin with only six pectoral fin rays.
distribution and habitat
Lamontichthys are common in the northwestern part of South America, especially in the upper part of the Amazon , in the foothills of the Orinoco, as well as in the region of Lake Maracaibo . Species of this genus occupy the same ecological niche as that of the Harttia. They live mainly in the main stream of rivers with sandy and stony bottoms.
ecology
Lamontichthys is an open breeder; Eggs are laid on open surfaces such as rocks, sunken wood, or plants and are exposed to the current. The females lay some eggs, which are large for the genus, yellow in color (1.4-1.8 millimeters in diameter) during each spawning process.
Taxonomy
The phylogenetic position of Lamontichthys is indefinite.
It is assumed that it is a branch of the Harttia , whereby Lamontichthys show much more similarities with Pterosturisoma microps of the monotypic genus Pterosturisoma , which differ from Lamontichthys only in the number of pectoral fin rays.
Six species of this genus are currently known:
- Lamontichthys avacanoeiro de Carvalho Paixão & Toledo-Piza , 2009
- Lamontichthys filamentosus La Monte , 1935
- Lamontichthys llanero Taphorn & Lilyestrom , 1984
- Lamontichthys maracaibero Taphorn & Lilyestrom , 1984
- Lamontichthys parakana de Carvalho Paixão & Toledo-Piza , 2009
- Lamontichthys stibaros Isbrücker & Nijssen , 1978
credentials
- Lamontichthys on Fishbase.org (English)