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- FishBase
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espaņol |
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Overview |
Main identification features
- elongate;long conical snout;long mouth, large teeth
- dorsal and anal finsat rear
- tail base in upcurved fleshy crest
- heavy polygonal diagonally interlocking scales
- tail fin = large fan
Elongate, moderately slender and robust; long conical, relatively broad snout; nostrils at front of snout; operculum nearly as deep as long, angular behind and convex below; large teeth on both jaws, in two rows on top jaw and one on bottom, outer edges of top and bottom jaws with a row of needlelike teeth; bones on side of roof of mouth of adult with large fangs; gill rakers large and flattened, with top edge convoluted, 57-62 on first gill arch; pectoral low on flank; pelvics at about middle of body; dorsal (1) and anal fin at rear just before tail; fins without spines; vertebral column continues upwards in a fleshy ridge at base of tail fin; tail a fan with its top edge covered by bony scales; scales large and rhomboidal, attached diagonally to each other by peg-and-socket; 51-56 lateral line scales, 43-48 scales before dorsal fin; anus bordered by three modified scales.
Dark brown or pale brown with numerous dark brown blotches above; a dark stripe along flank; somtimes a dark spot on upper base of tail; Juvenile: dark above, light below, with a dark stripe along flank; a lower stripe on belly from operculum to anal fin then to tail fin; belly spotted between stripes.
Reaches 125cm
Depth: 0-10m
Found in Caribbean and Pacific rivers, and in the Pacific enters estuaries.
From southern Mexico to Nicaragua on the Pacific coast.
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos); Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 10 m.
Depth Range Min: 0 m.
Diet: bony fishes; sea snakes/mammals/turtles/birds; mobile benthic crustacea (shrimps/crabs).
Eastern Pacific Range: Northern limit=17; Southern limit=12; Western limit=-99; Eastern limit=-87; Latitudinal range=5; Longitudinal range=12.
Egg Type: Benthic; No pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Pelagic.
Global Endemism: New world (East Pacific + West Atlantic); Transisthmian (East Pacific + Atlantic of Central America); TEP non-endemic; All species.
Habitat: Estuary; Freshwater.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 125 cm.
Regional Endemism: Eastern Pacific non-endemic; Continent only; Continent; Tropical Eastern Pacific (TEP) non-endemic; All species.
Residency: Resident.
Salinity: Brackish; Freshwater; Non Marine.
Water Column Position: Surface; Near Surface; Mid Water; Water column only;
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Names | |
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Links to other sites | |
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References |
- Gill, T.N., 1863., Descriptive enumeration of a collection of fishes from the western coast of Central America, presented to the Smithsonian Institution by Captain John M. Dow., Proc. Acad. Nat. Sci. Phila., 15:162-174.
- Suttkus, R. D., 1963., Order Lepisostei. Pp. 61-88. In: Fishes of the Western North Atlantic., Sears Foundation for Marine Research:61-88.
- Wiley, E.O., 1976., The phylogeny and biogeography of fossil and recent gars (Actinopterygii: Lepisosteidae). Ed. Richard F. Johnston., The University of Kansas Publications, Museum of Natural History:1-111.
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Acknowledgements | |
I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.
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Following modified from FishBase
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Top | See original
http://www.fishbase.org/Summary/speciesSummary.php?genusname=Atractosteus&speciesname=tropicus ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Atractosteus&speciesname=tropicus
http://192.134.151.83/Summary/speciesSummary.php?genusname=Atractosteus&speciesname=tropicus ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Atractosteus&speciesname=tropicus
&pull 20q v5.145 20180528: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Atractosteus&speciesname=tropicus |
Updated: 2024-06-20 08:15:01 gmt
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