|
Pleuronectiformes
A flatfish is a member of the ray-finned demersal fish order Pleuronectiformes, also called the Heterosomata, sometimes classified as a suborder of Perciformes. In many species, both eyes lie on one side of the head, one or the other migrating through or around the head during development. Some species face their left sides upward, some face their right sides upward, and others face either side upward. Many important food fish are in this order, including the flounders, soles, turbot, plaice, and halibut. Some flatfish can camouflage themselves on the ocean floor. Taxonomy Over 800 described species are placed into 16 families. Broadly, the flatfishes are divided into two suborders, Psettodoidei and Pleuronectoidei, with > 99% of the species diversity found within the Pleuronectoidei. The largest families are Soleidae, Bothidae and Cynoglossidae with more than 150 species each. There also exist two monotypic families (Paralichthodidae and Oncopteridae). Some families are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scophthalmidae
The Scophthalmidae are a family of flatfish found in the North Atlantic Ocean, Baltic Sea, Mediterranean Sea, and Black Sea.Chanet, B. (2003)Interrelationships of scophthalmid fishes (Pleuronectiformes: Scopththalmidae).''Cybium'' 27(4) 275-86. Fish of this family are known commonly as turbots, taxo''Scophthalmidae''at http://www.eol.org. though this name can refer specifically to '' Scophthalmus maximus'', as well. Some common names found in species of this family are turbots, windowpanes, and brills. Cladistic analysis reveals that this family is a monophyletic group. Of all the scophthalmids, the largest species ('' Scophthalmus maximus'') reaches approximately one meter in length. Some species in the family have been historically fished commercially (predominantly the brill flatfish and the turbot flatfish, ''S.rhombus'' and ''S. maximus'' respectively). Taxonomy The ''Scophthalmidae'' family is composed of two main clades, four genera, and eight species. The four gener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samaridae
Samaridae (''Samariscus corallines'') is a family of crested flounders, small flatfishes native to the Indo-Pacific. The family contains four genera with a total of 29 species. Taxonomy Samaridae is one of eight families a part of the SuperFamily Soleioidea. This SuperFamily is of the suborder Pleuronectoidei within the order Pleuronectiformes. Samaridae were formerly classified as a subfamily of Pleuronectidae. Anatomy and Morphology Young flat fish are bilaterally symmetrical until they reach between 5 and 120mm in length when one eye shifts from the lower side to the upper side until it is adjacent to the other eye. Adult flat fish swim and lie on the side without eyes. Adult Samaridae are not bilaterally symmetrical but do have symmetrical pelvic fins. They have a highly compressed body with eyes that bulge above the body surface which allows them to see out while buried beneath a surface. Samaridae have countershaded coloring with a darker pigment on the top of the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poecilopsettidae
The Poecilopsettidae are a family of flatfish in the order Pleuronectiformes, comprising three genera and 21 species. Species are typically demersal, living on marine bottoms at depths between in the Indo-Pacific and northwestern Atlantic; the deepest recorded occurrence is in the deepwater dab, ''Poecilopsetta beanii''. Sizes range from in length, though most species are usually under long. Diets consist of zoobenthos. In some traditional classifications, the group was recognisied as subfamily Poecilopsettinae in the family Pleuronectidae Pleuronectidae, also known as righteye flounders, are a family of flounders. They are called "righteye flounders" because most species lie on the sea bottom on their left sides, with both eyes on their right sides. The Paralichthyidae are the op .... Genera * '' Marleyella'' * '' Nematops'' * '' Poecilopsetta'' References Pleuronectidae Fish subfamilies {{Pleuronectiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhombosoleidae
Rhombosoleidae is a family of flatfish in the order Pleuronectiformes, comprising nine genera and 19 species; all members of this family are right eye flounders with asymmetrical pelvic fins. Species are typically demersal, living on bottoms in temperate marine waters on the continental shelf, although some species of ''Rhombosolea'' enter fresh water in New Zealand. Most are restricted to waters around Australia and New Zealand, though the Remo flounder, ''Oncopterus darwinii'', occurs in the southwestern Atlantic and the Indonesian ocellated flounder, ''Psammodiscus ocellatus'', occurs in Indonesia. In some traditional classifications, this group was formerly recognised as a subfamily, Rhombosoleinae, of the Pleuronectidae. Genera * '' Ammotretis'' * '' Azygopus'' * '' Colistium'' * '' Oncopterus'' * '' Pelotretis'' * ''Peltorhamphus'' * '' Psammodiscus'' * ''Rhombosolea ''Rhombosolea'' is a genus of righteye flounders. The four species in this genus can be found in the wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psettodidae
The spiny turbots are a family, Psettodidae, of relatively large, primitive flatfish found in the tropical waters of the east Atlantic and Indo-Pacific. The family contains just three species, all in the same genus, ''Psettodes''. The common name comes from the presence of spines in the dorsal and anal fins, which may indicate an evolutionary relationship with the Perciformes Perciformes (), also called the Percomorpha or Acanthopteri, is an order or superorder of ray-finned fish. If considered a single order, they are the most numerous order of vertebrates, containing about 41% of all bony fish. Perciformes means .... They are less asymmetrical than other flatfish, although the region around the eyes is twisted. They reach lengths of . Species The currently recognized species in this genus are: * '' Psettodes belcheri'' E. T. Bennett, 1831 (spottail spiny turbot) * '' Psettodes bennetti'' Steindachner, 1870 (spiny turbot) * '' Psettodes erumei'' ( Bloch & J. G. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paralichthyidae
Large-tooth flounders or sand flounders are a family, Paralichthyidae, of flounders. The family contains 14 genera with a total of about 110 species. They lie on the sea bed on their right side; both eyes are always on the left side of the head, while the Pleuronectidae usually (but not always) have their eyes on the right side of the head. They are found in temperate and tropical waters of the Atlantic, Indian and Pacific Oceans. Several species are important commercial and game fishes, notably the California halibut, ''Paralichthys californicus'' and the Pacific sanddab The Pacific sanddab (''Citharichthys sordidus'') is a species of flatfish. It is by far the most common sanddab, and it shares its habitat with the longfin sanddab (''C. xanthostigma'') and the speckled sanddab (''C. stigmaeus''). It is a mediu ..., ''Citharichthys sordidus''. Phylogenetic analyses have long indicated the non-monophyly of this family e.g., and two lineages have been consistently apparen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonguefish
Tonguefishes are flatfish in the family Cynoglossidae. They are distinguished by the presence of a long hook on the snout overhanging the mouth, and the absence of pectoral fins. Their eyes are both on the left side of their bodies, which also lack a pelvic fin. This family has three genera with a total of more than 140 species. The largest reaches a length of , though most species only reach half that size or less. They are found in tropical and subtropical oceans, mainly in shallow waters and estuaries, though some species are found in deep sea floors, and even a few in rivers. ''Symphurus thermophilus'' lives congregating around "ponds" of sulphur at hydrothermal vents on the seafloor. No other flatfish is known from hydrothermal vents. Scientists are unsure of the mechanism that allows the fish to survive and even thrive in such a hostile environment. See also *List of fish families This is a list of fish families sorted alphabetically by scientific name. There are 525 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ray-finned Fish
Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or horny spines (rays), as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii (lobe-finned fish). These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). By species count, actinopterygians dominate the vertebrates, and they constitute nearly 99% of the over 30,000 species of fish. They are ubiquitous throughout freshwater and marine environments from the deep sea to the highest mountain streams. Extant species can range in size from ''Paedocypris'', at , to the massive ocean sunfish, at , and the long-bodied oarfish, at . The vast majority of Actinoptery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flounder
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. Taxonomy The name "flounder" is used for several only distantly related species, though all are in the suborder Pleuronectoidei (families Achiropsettidae, Bothidae, Pleuronectidae, Paralichthyidae, and Samaridae). Some of the better known species that are important in fisheries are: * Western Atlantic ** Gulf flounder – ''Paralichthys albigutta'' ** Southern flounder – ''Paralichthys lethostigma'' ** Summer flounder (also known as ''fluke'') – ''Paralichthys dentatus'' ** Winter flounder – ''Pseudopleuronectes americanus'' * European waters **European flounder – ''Platichthys flesus'' ** Witch flounder – ''Glyptocephalus cynoglossus'' * North Pacific ** Halibut – ''Hippoglossus stenolepis'' ** Olive flounder – ''Paralichthys olivaceus'' Eye migration Larval flounder are born with one eye on each side o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citharidae
The Citharidae or largescale flounders are a small family of flounders with four genera. Three genera are restricted to the Indo-Pacific, while ''Citharus'' is from the Mediterranean and East Atlantic (off northwest Africa). There are a total of seven species. Species reach lengths ranging between . Taxa include: *Subfamily Brachypleurinae **Genus ''Brachypleura'' ***'' Brachypleura novaezeelandiae'' – yellow-dabbled flounder **Genus ''Lepidoblepharon'' ***'' Lepidoblepharon ophthalmolepis'' – scale-eyed flounder *Subfamily Citharinae **Genus '' Citharoides'' ***'' Citharoides axillaris'' ***'' Citharoides macrolepidotus'' – branched ray flounder ***'' Citharoides macrolepis'' – twospot largescale flounder ***'' Citharoides orbitalis'' **Genus ''Citharus'' ***'' Citharus linguatula'' – spotted flounder References * Joseph S. Nelson: ''Fishes of the World ''Fishes of the World'' by the American ichthyologist Joseph S. Nelson (1937–2011) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleuronectidae
Pleuronectidae, also known as righteye flounders, are a family of flounders. They are called "righteye flounders" because most species lie on the sea bottom on their left sides, with both eyes on their right sides. The Paralichthyidae are the opposite, with their eyes on the left side. A small number of species in Pleuronectidae can also have their eyes on the left side, notably the members of the genus ''Platichthys''. Their dorsal and anal fins are long and continuous, with the dorsal fin extending forward onto the head. Females lay eggs that float in mid-water until the larvae develop, and they sink to the bottom. They are found on the bottoms of oceans around the world, with some species, such as the Atlantic halibut, ''Hippoglossus hippoglossus'', being found down to . The smaller species eat sea-floor invertebrates such as polychaetes and crustaceans, but the larger righteye flounders, such as ''H. hippoglossus'', which grows up to in length, feed on other fishes and cep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paralichthodidae
The peppered flounder (''Paralichthodes algoensis'') is a flatfish of the family Paralichthodidae and the only species of the genus ''Paralichthodes''. It is a demersal fish that lives on sandy and muddy bottoms in subtropical waters, at depths of up to . Its native habitat is the southeastern Atlantic and the western Indian Ocean, specifically the African coastline from Mossel Bay, South Africa, to Delagoa Bay, Mozambique. It grows up to in length. Description The peppered flounder is a right-eyed flounder with an elongated, oval body. Its upper surface is brownish grey with small dark spots and its underside is white. The lateral line is equally developed on both sides. It has a relatively large, symmetrical mouth. References peppered flounder Fish of Mozambique Marine fish of South Africa peppered flounder The peppered flounder (''Paralichthodes algoensis'') is a flatfish of the family Paralichthodidae and the only species of the genus ''Paralichthodes''. It is a dem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
