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Fish

Freshwater Saltwater

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Bays, Deltas & Estuaries Intertidal/Coastline Reefs

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Sea Turtles in the Dry Tortugas: Tracking Movements of Endangered Species in Florida's Coral-Reef Habitats

December 2008 | Publisher: USGS | Format: URL

soundwaves.usgs.gov — Kristen Hart and Keith Ludwig of the USGS Florida Integrated Science Center (FISC) participated in two research cruises in 2008 to study patterns of habitat use by endangered sea turtles in and around the National Park. Hart's research effort focuses on quantifying patterns of sea turtle habitat use, employing capture-recapture and satellite- and More...

  • One of the smallest juvenile green turtles (Chelonia agassizii) captured thus far, August 2008, Dry

Low-temperature tolerance of African jewelfish, (Hemichromis letourneuxi)

Publisher: USGS | Science Center: Florida Integrated Science Center (FISC, Gainesville) | Format: URL

fl.biology.usgs.gov — Because the African jewelfish has a broad salinity tolerance, scientists tested how the species low-temperature tolerance varied at three salinities: freshwater (0 ppt), brackish (10 ppt) and marine (35 ppt) in the laboratory. A field experiment was then conducted to examine the survivorship of individuals when caged in several common aquatic More...

  • Image of an African jewelfish, (Hemichromis letourneuxi)