Sicydium salvini
| Sicydium salvini | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Sicydium salvini | ||||||||||||
| Ogylvie-Grant , 1884 |
Sicydium salvini is a Central American fish species from the subfamily of lip-toothed gobies within the goby-like .
features
Sicydium salvini reaches a maximum length of 110 mm. The body is elongated, semi-cylindrical in front and slightly compressed at the back. The top is gray to greenish brown. The underside is yellow. The short head is square and as wide as it is deep. The very short nose is blunt. The upper jaw is longer than the lower jaw. The lip is thickened. The jaws reach the back of the eyes. The mouth is long. The teeth in the upper jaw are arranged in a row. They are thin, bent back, slightly compressed, and fluted at the top. The young fish have three humps. The teeth in the lower jaw are arranged in rows of two. The front row of teeth are almost horizontal, curved forward and hidden in the roof of the mouth. The second row of teeth consists of a relatively small number of fairly short vertical or slightly curved pointed teeth. The gill openings are vertical. The belly is completely covered with small scales. 68 to 76 scales are arranged in longitudinal rows. There are 10 anal and 10 dorsal rays . The males have six to seven horizontal stripes on the sides and a few more on the tail. The females show a longitudinal stripe that runs from the belly to the base of the tail. The dorsal fins are dark. The second dorsal fin usually has numerous small points. The anal fin is dark in the male. In the female, it is light with a dark inner border.
Occurrence and habitat
Sicydium salvini occurs in streams and rivers with water temperatures of 21 to 31 ° C between sea level and altitudes of up to 660 m. The species is mostly found in rapids over rocky bottoms. The distribution area extends from the Río Tamarindo in Nicaragua over the Río Barú in Costa Rica to the Río Cárdenas in central Panama .
food
The diet consists of detritus , mud , diatoms and thread algae .
literature
- William A. Bussing: Peces de Las Aguas Continentales de Costa Rica: Freshwater Fishes of Costa Rica . Editorial Universidad de Costa Rica, 1998. ISBN 9977674892 (English, Spanish)
- Seth Eugene Meek and Samuel Frederick Hildebrand : The Fishes of the Fresh Waters of Panama . Fieldiana. Zoology. v. 10, no.15. Chicago, 1916.
Web links
- Sicydium salvini on Fishbase.org (English)