|
Leptocypris Crossensis
''Leptocypris crossensis'' is a species of cyprinid fish found in the Cross, Wouri and Sanaga River basins in Cameroon and Nigeria Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of G .... References Leptocypris Danios Fish of Africa Fish described in 1989 {{Cyprinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyprinid
Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest vertebrate animal family in general with about 3,000 species, of which only 1,270 remain extant, divided into about 370 genera. Cyprinids range from about 12 mm in size to the giant barb (''Catlocarpio siamensis''). By genus and species count, the family makes up more than two-thirds of the ostariophysian order Cypriniformes. The family name is derived from the Greek word ( 'carp'). Biology and ecology Cyprinids are stomachless fish with toothless jaws. Even so, food can be effectively chewed by the gill rakers of the specialized last gill bow. These pharyngeal teeth allow the fish to make chewing motions against a chewing plate formed by a bony process of the skull. The pharyngeal teeth are unique to each species and are used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross River (Nigeria)
Cross River (native name: Oyono) is the main river in southeastern Nigeria and gives its name to Cross River State. It originates in Cameroon, where it takes the name of the Manyu River. Although not long by African standards its catchment has high rainfall and it becomes very wide. Over its last to the sea it flows through swampy rainforest with numerous creeks and forms an inland delta near its confluence with the Calabar River, about wide and long between the cities of Oron on the west bank and Calabar, on the east bank, more than from the open sea. The delta empties into a broad estuary which it shares with a few smaller rivers. At its mouth in the Atlantic Ocean, the estuary is wide. The eastern side of the estuary is in the neighbouring country of Cameroon. The major tributary of Cross river is the river Aloma coming from Benue State to merge with the Cross River in Cross River State. Cross River State is connected with a major highway to its sister state Akwa I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wouri River
The Wouri (also Vouri or Vuri) is a river in Cameroon. Cameroon has two major rivers, the Sanaga, the longest at about 525 km (325 miles) long and the Wouri, the largest. The Wouri forms at the confluence of the rivers Nkam and Makombé, northeast of the city of Yabassi. It then flows about southeast to the Wouri estuary at Douala, the chief port and industrial city in the southwestern part of Cameroon on the Gulf of Guinea. The river is navigable about upriver from Douala. Exploration The Portuguese navigator and explorer Fernão do Pó or Fernando Pó, is believed to be the first European to explore the estuary of the Wouri, around the year 1472. The explorers noted an abundance of the mud lobster '' Lepidophthalmus turneranus'' in the Wouri River and named it "''Rio dos Camarões"'', Portuguese for "River of Prawns", and the phrase from which the name Cameroon derived. The phrase "''Rio dos Camarões"'' later became Camarones when the Spanish arrived in the regio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanaga River
The Sanaga River (formerly german: Zannaga) is the largest river in Cameroon located in East Region, Centre Region and Littoral Region. Its length is about from the confluence of Djérem and Lom River. The total length of Sanaga-Djérem River system is about . Djerem is the longest source of Sanaga River with a total length of 464.5 km. Course The Sanaga River has its Source at the Adamawa Plateau. It is formed by the confluence of the Djérem River and Lom River in the north of the East Region. Djérem River has a total length of and Lom River has a total length of . Apart from those originating rivers, the largest tributary of Sanaga is Mbam River with a total length of . Climate The Sanaga River forms a boundary between two tropical moist forest ecoregions. The Cross-Sanaga-Bioko coastal forests lie to the north between the Sanaga River and the Cross River of Nigeria, and the Atlantic Equatorial coastal forests extend south of the river through southwes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cameroon
Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west- central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; the Central African Republic to the east; and Equatorial Guinea, Gabon and the Republic of the Congo to the south. Its coastline lies on the Bight of Biafra, part of the Gulf of Guinea and the Atlantic Ocean. Due to its strategic position at the crossroads between West Africa and Central Africa, it has been categorized as being in both camps. Its nearly 27 million people speak 250 native languages. Early inhabitants of the territory included the Sao civilisation around Lake Chad, and the Baka hunter-gatherers in the southeastern rainforest. Portuguese explorers reached the coast in the 15th century and named the area ''Rio dos Camarões'' (''Shrimp River''), which became ''Cameroon'' in English. Fulani soldiers founded the Adamawa E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nigeria
Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea to the south in the Atlantic Ocean. It covers an area of , and with a population of over 225 million, it is the List of African countries by population, most populous country in Africa, and the List of countries and dependencies by population, world's sixth-most populous country. Nigeria borders Niger in Niger–Nigeria border, the north, Chad in Chad–Nigeria border, the northeast, Cameroon in Cameroon–Nigeria border, the east, and Benin in Benin–Nigeria border, the west. Nigeria is a Federation, federal republic comprising of States of Nigeria, 36 states and the Federal Capital Territory, Nigeria, Federal Capital Territory, where the capital, Abuja, is located. The List of Nigerian cities by population, largest city in Nigeria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptocypris
''Leptocypris'' is a genus of cyprinid fish found in Africa. There are currently nine recognized species in this genus. Species * '' Leptocypris crossensis'' Howes & Teugels, 1989 * '' Leptocypris guineensis'' (Daget, 1962) * '' Leptocypris konkoureensis'' Howes & Teugels, 1989 * '' Leptocypris lujae'' (Boulenger, 1909) * '' Leptocypris modestus'' Boulenger, 1900 * '' Leptocypris niloticus'' ( Joannis, 1835) (Nile minnow) * '' Leptocypris taiaensis'' Howes & Teugels, 1989 * ''Leptocypris weeksii'' (Boulenger, 1899) * '' Leptocypris weynsii'' (Boulenger Boulenger is a surname. Notable people with the surname include: * Benjamin Boulenger (born 1990), French footballer * Edward George Boulenger (1888–1946), British zoologist, director of aquarium at London Zoo * George Albert Boulenger (1858–1 ..., 1899) References * * {{Cyprinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danios
''Danio'' is a genus of small freshwater fish in the family Cyprinidae found in South and Southeast Asia, commonly kept in aquaria. They are generally characterised by a pattern of horizontal stripes, rows of spots or vertical bars. Some species have two pairs of long barbels. Species of this genus consume various small aquatic insects, crustaceans and worms. Taxonomy The name ''"danio"'' comes from the Bangla name ''dhani'', meaning "of the rice field". ''Danio'' was described in the early 19th century by Francis Hamilton. Two of the species included by him in the genus, still remain valid—''D. dangila'' and ''D. rerio''. About a century later (1916) and with many more species described in the meantime, the genus was split; the larger species into ''Danio'' and the smaller species into the genus ''Brachydanio''.Spence, R., Gerlach, G., Lawrence, C. & Smith, C. (2007)The behaviour and ecology of the zebrafish, ''Danio rerio''.''Biological Reviews'', 83 (1): 13–34. In 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of Africa
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 placodermi, 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 arthropo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
