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Cottus Amblystomopsis
The Sakhalin sculpin (''Cottus amblystomopsis'') is a species of amphidromous ray-finned fish belonging to the Family (biology), family Cottidae, the typical sculpins. It is found in eastern Russia to northern Japan. It reaches a maximum length of 20.8 cm. The Sakhalin sculpin was first formally Species description, described in 1904 by the Russian zoologist Peter Yulievich Schmidt with its Type locality (biology), type locality given as the Lyutoga River on Sakhalin. This species is sometimes placed in the subgenus ''Cephalocottus''. The Specific name (zoology), specific name is a misspelling of ''Ambystoma'', the axolotl (''Ambystoma mexicanus'') combined with ''opsis'', meaning "having the look of", and Schmidt described it as having a head that is "strongly dorsoventrally depressed, wide, nearly flat dorsally, abruptly sloping laterally, similar to the head of an axolotl" (translation). References Fish of Russia Cottus (fish) Taxa named by Peter Schmidt Fish descr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Schmidt (zoologist)
Peter Yulievich Schmidt (born 23 December 1872, St. Petersburg, died 25 November 1949, Leningrad) was a Russian and Soviet Union, Soviet Zoology, zoologist, Ichthyology, ichthyologist and museum curator. Peter Yulievich Schmidt attended the gymnasium of KI May before studying at the Physics and Mathematics Faculty of St. Petersburg University, from where he graduated in 1895. He was engaged in the laboratory of Professor V.M. Shimkevich and V.T. Shevyakov. He travelled through Jetisu, Semirechiy in 1899-1902. In 1908-1910 he participated in the Kamchatka expedition of F. P. Ryabushinsky, where he headed the zoological department. In 1906, he was awarded with a gold medal named after Petr Petrovich Semyonov by the Imperial Russian Geographical Society. From 1906 to 1930 he held the position of a professor at the Agricultural Institute in St. Petersburg (Leningrad) and from 1914 to 1931 he worked at the Zoological Museum of the Russian Academy of Sciences. From 1930 to 1949 Schmidt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Locality (biology)
In biology, a type is a particular wikt:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. 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 (mathematics), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cottus (fish)
''Cottus'' is a genus of the mainly freshwater ray-finned fishes belonging to the Family (biology), family Cottidae, the typical sculpins. They are often referred to as the "freshwater sculpins", as they are the principal genus of sculpins to be found in fresh water. They are native to the Palearctic and Nearctic. They are small fish, mostly less than in length, although a few species can reach twice that size. Taxonomy ''Cottus'' was first proposed as a genus by Carl Linnaeus in the 10th edition of the ''Systema Naturae'' when he described the European bullhead (''Cottus gobio'') and in 1850 this species was designated as the type species of the genus by the French ichthyologist Charles Frédéric Girard. The 5th edition of the ''Fishes of the World'' classifies this genus within the subfamily Cottinae of the family Cottidae. Other authorities have found that the Cottidae, as delimited in the 5th edition of Fishes of the World, is paraphyletic and that the monophyletic grouping ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of Russia
A fish (: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are cold-blooded, their body temperature varying with the surrounding water, though some large active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communicate acoustically with each other, such as during courtship displays. The study of fish is known as ichthyology. The earliest fish appeared during the Cambrian as small filter feeders; they continued to evolve through the Paleozoic, diversifying into many forms. The earliest fish w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axolotl
The axolotl (; from ) (''Ambystoma mexicanum'') is a neoteny, paedomorphic salamander, one that Sexual maturity, matures without undergoing metamorphosis into the terrestrial adult form; adults remain Aquatic animal, fully aquatic with obvious external gills. This trait is somewhat unusual among amphibians, though this trait is not unique to axolotls, and this is apparent as they may be confused with the Tadpole, larval stage or Ambystoma#Species, other neotenic adult mole salamanders (''Ambystoma spp.''), such as the occasionally paedomorphic tiger salamander (''Ambystoma tigrinum, A. tigrinum'') widespread in North America; or with mudpuppies (''Necturus spp.''), which bear a superficial resemblance but are from a different Family (biology), family of salamanders. Axolotls originally inhabited a system of interconnected wetlands and lakes in the Mexican highlands; they were known to inhabit the smaller lakes of Lake Xochimilco, Xochimilco and Lake Chalco, Chalco, and are al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Name (zoology)
In zoological nomenclature, the specific name (also specific epithet, species epithet, or epitheton) is the second part (the second name) within the scientific name of a species (a binomen). The first part of the name of a species is the name of the genus or the generic name. The rules and regulations governing the giving of a new species name are explained in the article species description. For example, the scientific name for humans is ''Homo sapiens'', which is the species name, consisting of two names: ''Homo'' is the " generic name" (the name of the genus) and ''sapiens'' is the "specific name". Etymology Historically, ''specific name'' referred to the combination of what are now called the generic and specific names. Carl Linnaeus, who formalized binomial nomenclature, made explicit distinctions between specific, generic, and trivial names. The generic name was that of the genus, the first in the binomial, the trivial name was the second name in the binomial, and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyutoga River
The Lyutoga () is a river on the Russian island of Sakhalin. It flows through Kholmsk and Aniva districts of Sakhalin Oblast. Starting at the western slope of the Mitsulsky Mountain Ridge, which belongs to the system of Western Sakhalin Mountains. It flows along a wide valley from North to South, and discharges into the Aniva Bay of the Sea of Okhotsk The Sea of Okhotsk; Historically also known as , or as ; ) is a marginal sea of the western Pacific Ocean. It is located between Russia's Kamchatka Peninsula on the east, the Kuril Islands on the southeast, Japan's island of Hokkaido on the sou .... There is a town of Aniva () (with population of ca. 8,100 people) in the mouth of the river, the town used to have the same name as the river before 1905. There are several comparatively large villages located on Lyutoga banks (upstream to downstream): Pyatirechie () (ca. 600), Chaplanovo () (ca. 900), Ogon'ki () (ca. 400) and Petropavlovskoye () (ca. 400). The Lyutoga has a w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Yulievich Schmidt
Peter Yulievich Schmidt (born 23 December 1872, St. Petersburg, died 25 November 1949, Leningrad) was a Russian and Soviet zoologist, ichthyologist and museum curator. Peter Yulievich Schmidt attended the gymnasium of KI May before studying at the Physics and Mathematics Faculty of St. Petersburg University, from where he graduated in 1895. He was engaged in the laboratory of Professor V.M. Shimkevich and V.T. Shevyakov. He travelled through Semirechiy in 1899-1902. In 1908-1910 he participated in the Kamchatka expedition of F. P. Ryabushinsky, where he headed the zoological department. In 1906, he was awarded with a gold medal named after Petr Petrovich Semyonov by the Imperial Russian Geographical Society. From 1906 to 1930 he held the position of a professor at the Agricultural Institute in St. Petersburg (Leningrad) and from 1914 to 1931 he worked at the Zoological Museum of the Russian Academy of Sciences. From 1930 to 1949 Schmidt was a scientific secretary to the Pacific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphidromous
Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousands of kilometres. Such migrations are usually done for better feeding or to reproduce, but in other cases the reasons are unclear. Fish migrations involve movements of schools of fish on a scale and duration larger than those arising during normal daily activities. Some particular types of migration are ''anadromous'', in which adult fish live in the sea and migrate into fresh water to spawn; and ''catadromous'', in which adult fish live in fresh water and migrate into salt water to spawn. Marine forage fish often make large migrations between their spawning, feeding and nursery grounds. Their movements are associated with ocean currents and with the availability of food in different areas at different times of the year. The migratory ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal scientific description of a newly encountered species, typically articulated through a scientific publication. Its purpose is to provide a clear description of a new species of organism and explain how it differs from species that have been previously described or related species. For a species to be considered valid, a species description must follow established guidelines and naming conventions dictated by relevant nomenclature codes. These include the International Code of Zoological Nomenclature (ICZN) for animals, the International Code of Nomenclature for algae, fungi, and plants (ICN) for plants, and the International Committee on Taxonomy of Viruses (ICTV) for viruses. A species description often includes photographs or other illustrations of type material and information regarding where this material is deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan
Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea in the south. The Japanese archipelago consists of four major islands—Hokkaido, Honshu, Shikoku, and Kyushu—and List of islands of Japan, thousands of smaller islands, covering . Japan has a population of over 123 million as of 2025, making it the List of countries and dependencies by population, eleventh-most populous country. The capital of Japan and List of cities in Japan, its largest city is Tokyo; the Greater Tokyo Area is the List of largest cities, largest metropolitan area in the world, with more than 37 million inhabitants as of 2024. Japan is divided into 47 Prefectures of Japan, administrative prefectures and List of regions of Japan, eight traditional regions. About three-quarters of Geography of Japan, the countr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
