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Florida Sand Darter
The Florida sand darter (''Ammocrypta bifascia'') is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to Gulf Coast drainages from the Aplalachicola to the Perdido River in Florida and southern Alabama. It inhabits streams with waters that are clear to tannin-stained where there are shifting sand bottoms and a moderate to fast flow. It is most frequently encountered where there is a moderate current in medium-sized to large streams, but it will enter smaller streams on occasion. Its appearance is identical to the naked sand darter aside from 2 black bands on each dorsal fin. This species can reach a length of , though most are only about in length, at depths of . The Florida sand darter was first formally described in 1975 by James D. Williams with the type locality given as the Choctawhatchee River, west of Pittman, Florida. This species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James David Williams
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Alabama
(We dare defend our rights) , anthem = "Alabama (state song), Alabama" , image_map = Alabama in United States.svg , seat = Montgomery, Alabama, Montgomery , LargestCity = Huntsville, Alabama, Huntsville , LargestCounty = Baldwin County, Alabama, Baldwin County , LargestMetro = Birmingham metropolitan area, Alabama, Greater Birmingham , area_total_km2 = 135,765 , area_total_sq_mi = 52,419 , area_land_km2 = 131,426 , area_land_sq_mi = 50,744 , area_water_km2 = 4,338 , area_water_sq_mi = 1,675 , area_water_percent = 3.2 , area_rank = 30th , length_km = 531 , length_mi = 330 , width_km = 305 , width_mi = 190 , Latitude = 30°11' N to 35° N , Longitude = 84°53' W to 88°28' W , elevation_m = 150 , elevation_ft = 500 , elevation_max_m = 735.5 , elevation_max_ft = 2,413 , elevation_max_point = Mount Cheaha , elevation_min_m = 0 , elevation_min_ft = 0 , elevation_min_point = Gulf of Mexico , OfficialLang = English language, English , Languages = * English ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of The Southeastern United States
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include non- salty mineral-rich waters such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of The Eastern United States
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammocrypta
''Ammocrypta'' is a genus of freshwater ray-finned fish, commonly known as the sand darters, which is classified in the subfamily Etheostomatinae, part of the Family (biology), family Percidae which also includes the perches, Gymnocephalus, ruffes and Sander (fish), pikeperches. The species in the genus occur in eastern North America in Canada and the continental United States. Characteristics ''Ammocrypta'' species are characterised by having rather elongate and slender bodies. Their bodies are translucent and there is only a single spine in the anal fin. They also have Spreitzer vertebrae, that is that the first three vertebrae of the backbone, counting from the head, have an open haemal arch which allows for the fish's kidney to expand. They have the habit of burying into the sand or gravel bed of streams, only their eyes being visible. The translucence of their bodies and their habit of burying themselves gives them some protection against predation. The shared morphological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Sand Darter
The western sand darter (''Ammocrypta clara'') is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is native to the central United States. Distribution The western sand darter occurs in river systems from Lake Michigan to Texas, including several sections of the Mississippi Basin. Its range extends as far east as the Elk River in West Virginia. Description This species is up to 7.1 centimeters in length. It is slender and nearly cylindrical in shape. It is pale, translucent silvery white with yellowish coloration along the back. It is distinguished from other sand darters the lack of dark bands or blotches, and by a spine on its operculum. Biology This fish lives in medium and large rivers, over sandy and gravel substrates. It requires loose substrate, because it spends much of its time buried in the sand with just its head protruding. This behavior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittman, Florida
Pittman is an unincorporated community and census-designated place (CDP) in Lake County, Florida, United States. The population was 180 at the 2010 census. It is part of the Orlando–Kissimmee Metropolitan Statistical Area. Geography Pittman is located in northern Lake County and is bordered to the west by Marion County, to the east by Lake Dorr, and to the north by Ocala National Forest. Florida State Road 19 passes through the community, leading south to Eustis and north to Palatka. According to the United States Census Bureau, the Pittman CDP has a total area of , of which , or 2.25%, are water. Demographics As of the census of 2000, there were 192 people, 69 households, and 58 families residing in the CDP. The population density was . There were 85 housing units at an average density of . The racial makeup of the CDP was 83.85% White, 11.98% African American, 2.60% from other races, and 1.56% from two or more races. Hispanic or Latino of any race were 5.21% o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choctawhatchee River
The Choctawhatchee River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map , accessed 15 April 2011 river in the southern United States, flowing through southeast Alabama and the Panhandle of Florida before emptying into Choctawhatchee Bay in Okaloosa and Walton counties. The river, the bay and their adjacent watersheds collectively drain . Overview The Choctawhatchee originates as two separate forks (East Fork and West Fork) in Barbour County, Alabama; the East Fork flows through Henry County and joins the West Fork in eastern Dale County about four miles (6 km) above Newton. The unified river then flows southwest through Dale and Geneva counties into Florida, collecting tributaries along the way: the Little Choctawhatchee River in Dale County, and the Pea River near Geneva. It then flows south into Florida, terminating at Choctawhatchee Bay. Other Alabama tributaries are Claybank Creek and Tight Eye Creek. On ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Locality (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have been described previously or are related. In order for species to be validly described, they need to follow guidelines established over time. Zoological naming requires adherence to the ICZN code, plants, the ICN, viruses ICTV, and so on. The species description often contains photographs or other illustrations of type material along with a note on where they are deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million species have been identified and described, out of some 8.7 million that may actually exist. Millions more have become extinct throughout the existence of life on Earth. Naming process A name of a new species becomes valid (available in zo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naked Sand Darter
The naked sand darter (''Ammocrypta beanii'') is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the Family (biology), family Percidae, which also contains the perches, Gymnocephalus, ruffes and Sander (fish), pikeperches. It is found in the south-eastern United States. Description The naked sand darter is a small fish ranging in size from 40 to 50 mm long, the maximum being around 64 mm. Being a long thin darter, it is devoid of scales with the exception of a few rows above and below the lateral line and sometimes the caudal peduncle. Slightly transparent in life with a yellow color and iridescent operculum, the naked sand darter blends in with its habitat. It has darker bands in the dorsal, anal, and caudal fins with a whitish base and tip. Males of breeding size with have a dark spot at the front of the dorsal fin. Unlike similar darters, it does not have an opercular spine. Diet Larvae of small fish are the primary sourc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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