|
Sand Grey Mullet
The sand grey mullet (''Myxus elongatus'') is a species of mullet found in coastal marine waters of Australia. Description As general mullet, fish they have a terminal mouth with thick lips, 2 dorsal fins, a lunate homocercal caudal fin (upper lobe and lower lobe are equal length) and do not have a lateral line organ, which is usually used for detecting changes in their surroundings. The cycloid (smooth outer edge) scales of the sand grey mullet fish are thin, flexible and overlapping with a mix of silver and grey color scheme. They are easily identified by their bright yellow eyes. They have a skeleton made of bone and have a streamline body shape for body undulations that allows them to be fast swimmers. Being constant swimmers required large amounts of oxygen which is achieved by water passing over their gills, which are in place of lungs to still have a large surface area through the various grooves in the gill tissue. The oxygen is obtained when they exhale and the wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Günther
Albert Karl Ludwig Gotthilf Günther FRS, also Albert Charles Lewis Gotthilf Günther (3 October 1830 – 1 February 1914), was a German-born British zoologist, ichthyologist, and herpetologist. Günther is ranked the second-most productive reptile taxonomist (after George Albert Boulenger) with more than 340 reptile species described. Early life and career Günther was born in Esslingen in Swabia (Württemberg). His father was a ''Stiftungs-Commissar'' in Esslingen and his mother was Eleonora Nagel. He initially schooled at the Stuttgart Gymnasium. His family wished him to train for the ministry of the Lutheran Church for which he moved to the University of Tübingen. A brother shifted from theology to medicine, and he, too, turned to science and medicine at Tübingen in 1852. His first work was "''Ueber den Puppenzustand eines Distoma''". He graduated in medicine with an M.D. from Tübingen in 1858, the same year in which he published a handbook of zoology for students of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mullet (fish)
The mullets or grey mullets are a family (Mugilidae) of ray-finned fish found worldwide in coastal temperate and tropical waters, and some species in fresh water. Mullets have served as an important source of food in Mediterranean Europe since Roman times. The family includes about 78 species in 20 genera. Mullets are distinguished by the presence of two separate dorsal fins, small triangular mouths, and the absence of a lateral line organ. They feed on detritus, and most species have unusually muscular stomachs and a complex pharynx to help in digestion. Classification and naming Taxonomically, the family is currently treated as the sole member of the order Mugiliformes, but as Nelson says, "there has been much disagreement concerning the relationships" of this family. The presence of fin spines clearly indicates membership in the superorder Acanthopterygii, and in the 1960s, they were classed as primitive perciforms, while others have grouped them in Atheriniformes. They ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Mullet
The freshwater mullet (''Pseudomyxus capensis'') is a species of fish in the family Mugilidae. It is endemic to South Africa. Distribution The freshwater mullet is endemic to South Africa where is distribution extends from Kwazulu-Natal, the Eastern Cape to the Western Cape, from Kosi Bay to the Breede River drainage. Habitat and biology This species is found in estuaries and the juveniles need freshwater reaches for growth and safety. The adults spawn at sea, after reaching sexual maturity in estuaries. The juveniles move into the estuaries and up into rivers in the late southern winter or early spring and then stay there for seven years for females and four years for males. They feed on benthic algae and small invertebrates over muddy substrates. Conservation The freshwater mullet's range and population have been impacted by the damming of streams and the introduction of alien fish. Taxonomy The freshwater mullet was previously assigned to '' Myxus'', but genetic studies in 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinkeye Mullet
The pinkeye mullet (''Trachystoma petardi''), also known simply as pinkeye, or freshwater mullet, Richmond mullet, or river mullet, is a species of ray-finned fish from the grey mullet family Mugilidae and the only species in the genus ''Trachystoma''. It is endemic to northeastern Australia where it occurs from the Burnett River in Queensland to the Clyde River in New South Wales. It is a subtropical species which is found in deep, slow flowing sections of rivers as well as in estuaries although it moves into coastal seas to spawn. It feeds mainly on algae and plant material, as well as detritus and benthic invertebrates. The pinkeye mullet was originally described by Francis de Laporte de Castelnau in 1875 as ''Mugil petardi''. The specific name honours a Mr Petard who sent Castelnau specimens of fishes he collected in the Richmond River in New South Wales; these included the type of this species. It is a dark greenish-brown mullet with a silvery belly and pale yello ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1861
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. Most fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
