| Gulf flounder | |
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Pleuronectiformes |
| Family: | Paralichthyidae |
| Genus: | Paralichthys |
| Species: | P. albigutta |
| Binomial name | |
| Paralichthys albigutta | |
The Gulf flounder (Paralichthys albigutta) is a species of saltwater flounder.
The Gulf flounder is a flatfish that swims on its side. Their two eyes look upward when swimming. They have sharp teeth, two eyes on their left side, and a white side opposite. Paralichthys albigutta is widely distributed in the Gulf of Mexico and a portion of the western North Atlantic. Adults are found in a variety of habitats, but generally prefer hard, sandy bottoms; juveniles settle in high salinity seagrass beds. Longevity is 7–10 years and females reach maturity between 1–2 years. It is commercially and recreationally exploited. The center of abundance of Paralichthys albigutta in the Gulf of Mexico is along its northeastern coast. [3] West of the Mississippi River delta, it occurs in very low numbers. [4] It appears to naturally occur in low abundance in seagrass beds. [5] It is common in museum collections (660 lots). Many species of fishes, including P. albigutta, have experienced declines in abundance in the Northern Gulf of Mexico from 1970 to 2000; although Fodrie et al. (2010) [6] attributed this at least in part to the effects of global rises in sea temperature, there are also a number of other factors (e.g., bycatch in trawl fisheries, increased recreational landings: T. Munroe pers. comm. 2015) that may contribute to these declines. Gill netting has been implicated in the decline of flounder stocks in North Carolina due to targeting of non-reproductive juveniles; however, the population-level effects of this method of harvest on P. albigutta are unknown. [1]
This demersal speciesoccurs in shallow depths within estuaries and coastal environments; it is most commonly found on the continental shelf at depths of 18–92 m, but has been collected to about 130 m. It is found in a variety of habitats, including seagrass beds, [7] coastal lagoons, flat hard-bottom and limestone ledges. [8] It prefers hard, sandy bottoms. Juveniles utilize vegetation for habitat or are found adjacent to vegetation in estuaries. [9] Juveniles inhabit high salinity seagrass beds and older adults occur offshore in deeper depths. It undergoes ontogenetic shifts in dietary preference, feeding on amphipods and small crustaceans at small sizes, and feeding primarily on fishes as adults. [7] Adults spend most of the year in bays and estuaries, migrating into deeper offshore waters to spawn during fall and winter (peaking between late October-mid-December). Specimens with ripe gonads have been collected at depths of 20–40 m in the eastern Gulf of Mexico. [9] Larvae migrate inshore during January–February. The age at maturity for females is 1 year (FWRI 2010) with all mature by 2 years and size at 50% maturity is 35–38 cm TL. Males reach maturity between 30 and 35 cm TL. Females grow faster and larger than males. Longevity for males is 8–11 years and females is 7 years (Munroe 2002). [1]
They are a common sport fish that can be readily caught with dead fish (such as mullet), live bait, or even artificial or frozen baits such as shrimp or clams. A common way of catching this flounder is by spearfishing or jigging. Commercial fishermen are permitted to take up to 50 lbs of flounder species as by-catch per trip. The Gulf States Marine Fisheries Commission is currently conducting stock assessments for gulf and southern flounder populations in the Gulf of Mexico, which will inform the development of a fishery management plan. [1] This species is commercially and recreationally exploited as a foodfish. It is caught using trawl, gill net, gig, hook-and-line, and trammel net. As with P. lethostigma, this species is harvested using gill nets in estuaries. [10] [1]
Gulf flounder appear to prefer the ocean floor and camouflage against areas to stealthily strike their prey. This demersal speciesoccurs in shallow depths within estuaries and coastal environments; it is most commonly found on the continental shelf at depths of 18–92 m, but has been collected to about 130 m. [1]
This is a commercially and recreationally important species, particularly in Florida. It is also taken as by-catch in commercial trawl fisheries, particularly the penaeid shrimp fishery. [9] Seagrass beds have experienced historical declines off Florida, especially in Florida Bay. [11] The large seagrass die-off in Florida Bay between 1987 and 1995 was likely caused by salinity stress, turbidity, and algal blooms. [12] [13] Over that decade, the standing crop of Thalassia testudinum declined by 28%, Halodule wrightii by 92%, and Syringodium filiforme by 88%. [13] Since then, the decline has slowed, but die-off continues to occur. Between 1995 and 2003, turtle and shoal grass abundance increased with improved water clarity and has remained generally stable. [14] Tampa Bay and Sarasota Bay also experienced significant seagrass declines in the 1980s, but has since recovered following the improvement of waste water management. [15] It has been recorded in the diet of the invasive lionfish, [16] which occurs throughout the entire depth range of P. albigutta. [1]
Flounders are a group of flatfish species. They are demersal fish, found at the bottom of oceans around the world; some species will also enter estuaries.
Bycatch, in the fishing industry, is a fish or other marine species that is caught unintentionally while fishing for specific species or sizes of wildlife. Bycatch is either the wrong species, the wrong sex, or is undersized or juveniles of the target species. The term "bycatch" is also sometimes used for untargeted catch in other forms of animal harvesting or collecting. Non-marine species that are caught but regarded as generally "undesirable" are referred to as rough fish or coarse fish.
Litopenaeus setiferus is a species of prawn found along the Atlantic coast of North America and in the Gulf of Mexico. It was the subject of the earliest shrimp fishery in the United States.
The crevalle jack, also known as the common jack, black-tailed trevally, couvalli jack, black cavalli, jack crevale, or yellow cavalli is a common species of large marine fish classified within the jack family, Carangidae. The crevalle jack is distributed across the tropical and temperate waters of the Atlantic Ocean, ranging from Nova Scotia, Canada to Uruguay in the western Atlantic and Portugal to Angola in the eastern Atlantic, including the Mediterranean Sea. It is distinguishable from similar species by its deep body, fin colouration and a host of more detailed anatomical features, including fin ray and lateral line scale counts. It is one of the largest fish in the genus Caranx, growing to a maximum known length of 124 cm and a weight of 32 kg, although is rare at lengths greater than 60 cm. The crevalle jack inhabits both inshore and offshore waters to depths of around 350 m, predominantly over reefs, bays, lagoons and occasionally estuaries. Young fish dispersed north by currents in the eastern Atlantic are known to migrate back to more tropical waters before the onset of winter; however, if the fish fail to migrate, mass mortalities occur as the temperature falls below the species' tolerance.
A seagrass meadow or seagrass bed is an underwater ecosystem formed by seagrasses. Seagrasses are marine (saltwater) plants found in shallow coastal waters and in the brackish waters of estuaries. Seagrasses are flowering plants with stems and long green, grass-like leaves. They produce seeds and pollen and have roots and rhizomes which anchor them in seafloor sand.
The gag grouper, also known as velvet rockfish, the gag, or charcoal belly, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. It comes from warmer parts of the West Atlantic, including the Caribbean and Gulf of Mexico. It is a drab, mottled-gray fish lacking the distinguishing features of most other groupers. Its pattern of markings resemble the box-shaped spots of the black grouper. It lacks the streamer-points on the tail fin that scamp and yellowmouth grouper have and lacks yellow coloration around the mouth.
The winter flounder, also known as the black back, is a right-eyed ("dextral") flatfish of the family Pleuronectidae. It is native to coastal waters of the western north Atlantic coast, from Labrador, Canada to Georgia, United States, although it is less common south of Delaware Bay. It is the most common near-shore (shallow-water) flounder in the waters from Newfoundland down through Massachusetts Bay, reaching a maximum size around 61 cm in length and 2.25 kg in weight. The species grows larger on Georges Bank, where they can reach a length of 70 cm and weight of 3.6 kg. Although winter flounder historically supported large commercial and recreational fisheries, biomass and landings have decreased since the 1980s.
The barndoor skate is a species of marine cartilaginous fish in the skate family Rajidae of the order Rajiformes. It is native to the northwestern Atlantic Ocean, and is found from the Grand Banks of Newfoundland and the southern side of the Gulf of St. Lawrence south to North Carolina. The fish is one of the largest skates found in the North Atlantic Ocean, reaching lengths up to 1.5 m (5 ft). It is carnivorous, feeding on invertebrates and other fish found near the sea floor.
The witch, known in English by a variety of other common names including the witch flounder, pole flounder, craig fluke, Torbay sole, and grey sole, is a species of flatfish from the family Pleuronectidae. It occurs on both sides of the North Atlantic Ocean on muddy sea beds in quite deep water. In northern Europe it has some importance in fisheries as a food fish.
The western trumpeter whiting is a species of marine fish of the smelt whiting family Sillaginidae that is commonly found along the northern coast of Australia and in southern Indonesia and New Guinea. As its name suggests, it is closely related to and resembles the trumpeter whiting which inhabits the east coast of Australia and is distinguishable by swim bladder morphology alone. The species inhabits a variety of sandy, silty and muddy substrates in depths from 0 to 15 m deep, with older fish inhabiting deeper waters. Western trumpeter whiting are benthic carnivores which take predominantly crustaceans and polychaetes as prey. The species reaches sexual maturity at the end of its first year of age, spawning in batches between December and February. The species is taken as bycatch with other species of whiting and shrimps in Australia.
The summer flounder or fluke is a marine flatfish that is found in the Atlantic Ocean off the East Coast of the United States and Canada. It is especially abundant in waters from North Carolina to Massachusetts.
This is a glossary of terms used in fisheries, fisheries management and fisheries science.
The spiny seahorse, also referred to as the thorny seahorse, is a small marine fish in the family Syngnathidae, native to the Indo-Pacific area. It is classified as a Vulnerable species by the IUCN.
As with other countries, the 200 nautical miles (370 km) exclusive economic zone (EEZ) off the coast of the United States gives its fishing industry special fishing rights. It covers 11.4 million square kilometres, which is the second largest zone in the world, exceeding the land area of the United States.
Paralichthys lethostigma, the southern flounder, is a species of large-tooth flounder native to the East Coast of the United States and the northern Gulf of Mexico. It is a popular sport fish and is the largest and most commercially valuable flounder in the western North Atlantic Ocean and Gulf of Mexico. It is a "left-eyed flounder", meaning the left side is pigmented and is the "up side".
The bluespotted trevally, also known as the wide-mouthed trevally, is a species of moderately large marine fish in the jack family Carangidae. The bluespotted trevally is distributed through the tropical east Indian and west Pacific Oceans, ranging from Taiwan in the north to Australia in the south. It is an inshore species, found in sandy, muddy and seagrass environments, often in large bays. The bluespotted trevally is distinguished by dark blue spots on its upper body, as well as a number of more detailed anatomical features. It is a benthopelagic predator, taking a variety of crustaceans including crabs and prawns as a juvenile, before shifting to a more fish-dominated diet as an adult. It is one of the most common predators in the Gulf of Carpentaria of northern Australia, and is considered the most important predator of commercially important prawn species. Sexual maturity is reached at 110 mm in length and one year of age, with spawning occurring year round with a peak in spring. Growth is estimated to be 82.2 mm per year for both sexes, reaching a maximum known length of 66 cm. Bluespotted trevally are commonly taken as bycatch in prawn fisheries, however are of little commercial value and often discarded. They are occasionally taken by anglers on lures and baits, but are considered mediocre table fare.
Fasciolaria tulipa, common name the true tulip, is a species of large sea snail, a marine gastropod mollusk in the family Fasciolariidae.
The Atlantic needlefish is a common demersal needlefish species common in marinas and other areas with minimal currents. Its extremely long jaw and body set this fish apart from other predators. Atlantic needlefish are found from Maine to Brazil and have been known to venture into fresh water for short periods.
Thalassia testudinum, commonly known as turtlegrass, is a species of marine seagrass. It forms meadows in shallow sandy or muddy locations in the Caribbean Sea and the Gulf of Mexico. Turtle grass and other seagrasses form meadows which are important habitats and feeding grounds. The grass is eaten by turtles and herbivorous fish, supports many epiphytes, and provides habitat for juvenile fish and many invertebrate taxa.
In the fishery business, a bycatch reduction device is a tool designed to minimize unintended capture of marine animals, to reduce the adverse effects of fishing on the ecosystem.
| Authority control databases: National |
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