Floridian Nature

Learn about Florida's beautiful and unique nature.





Florida Nature: Endangered Fish
Fish have three endangered species, two threatened species, and ten species of special concern, for a total of 15 fish on our list. Each Florida fish is classified as either endangered, threatened or a species of special concern (SSC). The number after the classification refers to the reason it is classified as a species of special concern. The description of each number value can be found here. Click on the common name of the fish for a brief description and photograph of each endangered fish from the state of Florida. The state of Florida is often referred to as the fishing capitol of the world. Florida has 1,350 miles of shoreline and is interlaced with countless lakes, rivers, ponds streams, and brackish waters. Both freshwater and saltwater fish can be found within the state of Florida. Some fish such as the Sturgeon are anadromous species, meaning they live in the ocean mostly, and breed in fresh water, others are amphidromous, moving between fresh and salt water during their life cycle, but not to breed. 

Common Name Scientific Name Standing
Atlantic sturgeon Acipenser oxyrinchus SSC (1)
Shortnose sturgeon Acipenser brevirostrum Endangered
Shoal bass Micropterus cataractae SSC (1,2)
Suwannee bass Micropterus notius SSC (1)
Rivulus Rivulus marmoratus SSC (1)
Lake Eustis pupfish Cyprinodon variegatus hubbsi SSC (1)
Blackmouth shiner Notropis melanostomus Endangered
Bluenose shiner Pteronotropis welaka SSC (1,2)
Saltmarsh topminnow Fundulus jenkinsi SSC (1)
Key silverside Menidia conchorum Threatened
Crystal darter Crystallaria asprella Threatened
Harlequin darter Etheostoma histrio SSC (1)
Okaloosa darter Etheostoma okalossae Endangered
Southern tessellated darter Etheostoma olmstedi SSC (1)
Key blenny Starksia starcki SSC (1)




Gulg Sturgeon found in Florida and listed as aspecies of special concernAtlantic Sturgeon ((Acipenser oxyrinchus) SSC- Sturgeon are among the oldest living species of fish. They have retained many primitive characteristics, suggesting what fish may have looked like during the age of the dinosaurs. Atlantic sturgeon range along the entire east coast of North America, from the St. John River in New Brunswick, Canada, to the St. Johns River along the east coast of Florida. A separate subspecies, the gulf sturgeon, is found along the west coast of Florida and throughout the Gulf of Mexico. Gulf sturgeon number initially declined due to overfishing throughout most of the 20th century. Habitat loss was exacerbated by the construction of water control structures, such as dams and "sills", mostly after 1950. Other habitat disturbances such as dredging, groundwater extraction, irrigation, and flow alterations also threaten the Gulf sturgeon.

shortnose sturgeon endangered fish in FloridaShortnose Sturgeon (Acipenser brevirostrum)E- The shortnose sturgeon shares the same general external morphology of all sturgeon. The shortnose sturgeon is the smallest of the three sturgeon species that occur in eastern North America, having a maximum known total length of 4.7 feet  and weight of 50.7 pounds. Growth rate and maximum size vary with latitude, with the fastest growth occurring among southern populations. Maximum known age is 67 years for females, but males seldom exceed 30 years of age. n the 1950s, sturgeon fisheries declined on the east coast which resulted in a lack of records of shortnose sturgeon. This led the Fish and Wildlife Service (FWS) to conclude that the fish had been eliminated from the rivers in its historic range (except the Hudson River) and was in danger of extinction. FWS believed the population level of the shortnose sturgeon had declined because of pollution and overfishing, both directly and incidentally in shad gillnets.

shoal bass found in Florida, Georgia, and Alabama and is a fish of special concern in the state of FloridaShoal Bass (Micropterus cataractae ) SSC - Until October 1999, this species was variously considered to be a redeye bass or subspecies of the redeye bass.  The shoal bass is common in the Apalachicola and Chipola River where shoals exists. It is also known in the Chattahoochee and Flint river drainages. Shoal bass are closely associated with rock shoals and are uncommon in other habitats. Shoal bass feed mainly on aquatic insects on the surface. They also feed on larval insects, crayfish and fish. Shoal bass grow much faster than redeye bass.
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