Abstract: The bigmouth sleeper Gobiomorus dormitor is an eleotrid species found in southern Florida and Texas, along the Atlantic coast of Central and South. bigmouth sleeper Gobiomorus dormitor Identification and Information for Texas Fishes. Taxonomic Hierarchy. Life. Animalia. Chordata. Actinopterygii. Perciformes. Eleotridae (Sleepers). Gobiomorus. Gobiomorus dormitor (Bigmouth Sleeper).
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Range includes the Atlantic slope of North America from southern Texas reported as common or occasional in the Rio Grande and southeastern Florida Gilmore south to eastern Brazil Page and Burr Center of abundance is in the Caribbean region, but the species is also common in tributaries to the southern Gulf of Mexico; it is absent from tributaries along the northern and eastern margins of the Gulf of Mexico; it apparently occurs also in the western Bahamas Gilmore This species is represented by a large number of occurrences subpopulations.
Total adult population size is unknown but very large. This species is common in much of its range. Overall Threat Impact Comments: In Florida, threats include reduced water quality, loss of natural aquatic vegetative cover, alteration of natural stream flows, and barriers such as floodgates and salinity dams Gilmore Relatively Stable Short-term Trend Comments: Trend over the past three generations is uncertain but probably relatively stable or slowly declining.
Maintain streams in natural condition with respect to flow, vegetation, and water quality. States and Canadian Provinces Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data.
Please refer to our Distribution Data Sources to find contact information for your jurisdiction. A yellowish to olive brown fish with a fusiform body, wide flattened head, two dorsal fins six spines in first onerounded caudal fin, separate pelvic fins, no lateral line canal on the body, six branchiostegal rays, and a projecting lower jaw; variously mottled and often spotted, with several dark lines radiating across cheek and opercle; dark lateral body stripe and dark bar across first dorsal fin are most prominent in juveniles; scales in row along midside; maximum total length about 60 cm, to about 32 cm SL in Florida Robins and RayGilmore Differs from other sleepers in having dark radiating lines on the cheek and a projecting low jaw.
Fishing Worldrecords perch-likes up 10 kg >> Gobiomorus dormitor
N Long Distance Migrant: N Estuarine Habitat s: Deep goblomorus, Shallow water Habitat Comments: This species is common in brackish coastal lagoons and freshwater coastal streams Lee et al. Adults typically occur in flowing fresh water, often well inland Robins and RayGilmorebut some breeding populations occur in freshwater lakes in Central America see Gilmore Capable of moving overland for short distances Gilmore Spawns in brackish water or fresh water.
In Florida, bigmouth sleepers occur over open sand along undercut banks or in heavy vegetation or around rock or wood structures; juveniles have been found in fresh to brackish water dormotor. Invertivore, Piscivore Immature Food Habits: Invertivore, Piscivore Food Comments: Diet includes fishes and domitor. Crepuscular, Nocturnal Immature Phenology: Crepuscular, Nocturnal Phenology Comments: Feed mainly at night or during twilight.
Investigate population dynamics, microhabitat requirements, and aspects of early life history Gilmore Zoological data developed by NatureServe and its network of natural heritage programs see Local Programs and other contributors and cooperators see Sources.
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Ecology of bigmouth sleepers (Eleotridae: Gobiomorus dormitor) in a Puerto Rico reservoir
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American Fisheries Society, Special Publication NatureServe Status Global Status: G4 Global Status Last Reviewed: Ranked by inspection Rounded Global Status: G4 – Gobiomotus Secure Reasons: Large circum-Caribbean range, but threatened by habitat alteration in Florida. United States National Status: States and Canadian Provinces.
Distribution by Watershed based on multiple information sources. Economic Attributes Not yet assessed. Red imported fire ant impact on wildlife: The Texas Journal of Science 46 1: Bigmouth sleeper Gobiomorus dormitor.
Pages in C. Rare and endangered biota of Florida. University Press of Florida, Gainesville.
Gobiokorus and scientific names of fishes from the United States, Canada, and Mexico. Peterson field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Harcourt, Boston.
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IUCN Red List of Threatened Species
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