Lamontichthys maracaibero
Lamontichthys maracaibero | ||||||||||||
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Lamontichthys maracaibero | ||||||||||||
Taphorn & Lilyestrom , 1984 |
Lamontichthys maracaibero is a fish species of the family of armored catfish (Loricariidae) in oxygen-rich streams and rivers in the catchment area of the Venezuelan Lake Maracaibo occurs and is relatively common in the middle reaches of these waters.
features
Lamontichthys maracaibero is a maximum of 21 cm long and, like almost all other armored catfish, has a body completely armored with bone plates, a suction mouth below and a jaw set with small teeth, with which it is able to grate off growth food.
In contrast to all other species of the genus Lamontichthys , Lamontichthys maracaibero has only a single bone plate between the base of the pelvic fin and the anus' anus. With all others there are two bone plates. Lamontichthys maracaibero specimens larger than 15 cm have a hump between the head and the beginning of the dorsal fin. As a result, they have a greater relative height in front of the dorsal fin than the other Lamontichthys species (14–15.1% of the SL , vs. 11.5–13.5%). Lamontichthys maracaibero also differs from L. filamentosus and L. llanero in the oval shape of the lower lip, which is approximately round in the other two species. The number of lateroventral body plates in L. maracaibero specimens that are smaller than 5 cm is less than in L. llanero (5 or 6 plates, vs. 7 to 10). L. maracaibero's snout is fully armored in front and its teeth have short tips. On the other hand, L. avacanoeiro , L. parakana and L. stibaros have long tips and an unarmoured zone at the tip of the snout. L. maracaibero specimens larger than 10 cm also differ from L. avacanoeiro , L. parakana and L. stibaros by their shorter head (16.7–17.8%, vs. 19.8–23% the SL) and the shorter lower jaw (14.8–19.1%, vs. 18.4–23.4% of the head length).
literature
- Andrea de Carvalho Paixão, Mônica Toledo-Piza: Systematics of Lamontichthys Miranda-Ribeiro (Siluriformes: Loricariidae), with the description of two new species Neotropical Ichthyology, Volume 7, No. 4 Porto Alegre, doi: 10.1590 / S1679-62252009000400002
Web links
- Lamontichthys maracaibero on Fishbase.org (English)