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Pipefish
Pipefishes or pipe-fishes (Syngnathinae) are a subfamily of small fishes, which, together with the seahorses and seadragons (''Phycodurus'' and ''Phyllopteryx''), form the family Syngnathidae. Description Pipefish look like straight-bodied seahorses with tiny mouths. The name is derived from the peculiar form of the snout, which is like a long tube, ending in a narrow and small mouth which opens upwards and is toothless. The body and tail are long, thin, and snake-like. They each have a highly modified skeleton formed into armored plating. This dermal skeleton has several longitudinal ridges, so a vertical section through the body looks angular, not round or oval as in the majority of other fishes. A dorsal fin is always present, and is the principal (in some species, the only) organ of locomotion. The ventral fins are consistently absent, and the other fins may or may not be developed. The gill openings are extremely small and placed near the upper posterior angle of the gill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syngnathus Typhle
The broadnosed pipefish or deepnosed pipefish (''Syngnathus typhle'') is a fish of the family Syngnathidae (seahorses and pipefishes). It is native to the Eastern Atlantic from Vardø in Norway, Baltic Sea (north to the Gulf of Finland) and the British Isles at north to Morocco at south. It is also found in the Mediterranean Sea, Black Sea and Sea of Azov. It is common in the coastal shallow waters, usually on reefs with seagrasses. This species is notable for its "broad" snout, which is as deep as its body. Description The broadnosed pipefish is a slender, elongated fish with a hexagonal cross-section which distinguishes it from its even more threadlike relation the straightnose pipefish (''Nerophis ophidion''), which has a circular cross-section. The body surface is covered by small bony plates. The head resembles that of a seahorse with a long, laterally flattened snout and obliquely sloping mouth. Unlike the straightnose pipefish, it has a fan-shaped caudal fin. The general c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flagtail Pipefish
'' Doryrhamphus'' and ''Dunckerocampus'', popularly known as flagtail pipefish,Weiss, T. (2005). Flagtail Pipefish In The Home Aquarium.'' Fusedjaw are two genera of fishes in the family Syngnathidae. They are found in warm, relatively shallow waters of the Indo-Pacific, with a single species, ''D. paulus'', in the eastern Pacific. Kuiter, R. H. (2003). ''Seahorses, Pipefishes, and their relatives.'' 2nd edition. TMC Publishing. Chorleywood. Most of these pipefishes are very colourful, and are fairly popular in the marine aquarium hobby despite requiring special care and not being recommended for beginners.Schultz III, H. C. (2003). There's More to Pipes Than Just PVC: The Genus Doryrhamphus and Other Pipefish.' Reefkeeping Their habit of flashing the distinctly patterned tails during courtship and other displays have earned them their English popular name. Adults are highly territorial and usually live in pairs. They feed on tiny crustaceans and other small animals, and most spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syngnathidae
The Syngnathidae is a family of fish which includes seahorses, pipefishes, and seadragons (''Phycodurus'' and ''Phyllopteryx''). The name is derived from grc, σύν (), meaning "together", and (), meaning "jaw". The fused jaw is one of the traits that the entire family have in common. Description and biology Syngnathids are found in temperate and tropical seas across the world. Most species inhabit shallow, coastal waters, but a few are known from the open ocean, especially in association with sargassum mats. They are characterised by their elongated snouts, fused jaws, the absence of pelvic fins, and by thick plates of bony armour covering their bodies. The armour gives them a rigid body, so they swim by rapidly fanning their fins. As a result, they are relatively slow compared with other fish but are able to control their movements with great precision, including hovering in place for extended periods. Uniquely, after syngnathid females lay their eggs, the male then fertiliz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seahorse
A seahorse (also written ''sea-horse'' and ''sea horse'') is any of 46 species of small marine fish in the genus ''Hippocampus''. "Hippocampus" comes from the Ancient Greek (), itself from () meaning "horse" and () meaning "sea monster" or "sea animal". Having a head and neck suggestive of a horse, seahorses also feature segmented bony armour, an upright posture and a curled prehensile tail. Along with the pipefishes and seadragons (''Phycodurus'' and ''Phyllopteryx'') they form the family Syngnathidae. Habitat Seahorses are mainly found in shallow tropical and temperate salt water throughout the world, from about 45°S to 45°N. They live in sheltered areas such as seagrass beds, estuaries, coral reefs, and mangroves. Four species are found in Pacific waters from North America to South America. In the Atlantic, ''Hippocampus erectus'' ranges from Nova Scotia to Uruguay. ''Hippocampus zosterae, H. zosterae'', known as the dwarf seahorse, is found in the Bahamas. Colonies hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alligator Pipefish
The alligator pipefish or double-ended pipefish (''Syngnathoides biaculeatus'') is a species of fish in the family Syngnathidae and is the only species in the monotypic genus '' Syngnathoides''. It is found in shallow water in the tropical and subtropical Indo-Pacific, its range extending from East Africa to northern Australia. This fish lives in habitats of seagrass and seaweed, and hides by positioning itself vertically with its head down amidst the similar-coloured fronds of vegetation. The elongated, well-camouflaged body can reach in length. It feeds by sucking up its prey. Description The alligator pipefish can grow to a length of about though a more typical length is . The narrow head has the snout tipped by a pair of short tentacles and the body is elongated and tetrahedral. The dorsal fin has 38 to 48 soft rays and the anal fins have 4 soft rays. The tail is long and tapering. It is prehensile and lacks a tail fin, being used to anchor the fish to vegetation. The colour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phycodurus
The leafy seadragon (''Phycodurus eques'') or Glauert's seadragon, is the only member of the genus ''Phycodurus'' and is a marine fish in the family Syngnathidae, which includes seadragons, pipefish, and seahorses. It is found along the southern and western coasts of Australia. The name is derived from the appearance, with long leaf-like protrusions coming from all over the body. These protrusions are not used for propulsion; they serve only as camouflage. The leafy seadragon propels itself by means of a pectoral fin on the ridge of its neck and a dorsal fin on its back closer to the tail end. These small fins are almost completely transparent and difficult to see as they undulate minutely to move the creature sedately through the water, completing the illusion of floating seaweed. Popularly known as "leafies", it is the marine emblem of the state of South Australia and a focus for local marine conservation. Taxonomy The generic name ''Phycodurus'' is derived from the Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syngnathus Abaster-22
''Syngnathus'' is a genus of fish in the family Syngnathidae found in marine, brackish and sometimes fresh waters of the Atlantic, Indian and Pacific Ocean. Fossils of these species are found from the Oligocene to the Pleistocene. They are known from various localities of Greece, Italy, Germany and United States. Species There are currently 36 recognized species in this genus: * ''Syngnathus abaster'' A. Risso, 1827 (Black-striped pipefish) * ''Syngnathus acus'' Linnaeus, 1758 (Greater pipefish) * ''Syngnathus affinis'' Eichwald, 1831 * ''Syngnathus auliscus'' ( Swain, 1882) (Barred pipefish) * '' Syngnathus californiensis'' D. H. Storer, 1845 (Kelp pipefish) * '' Syngnathus caribbaeus'' C. E. Dawson, 1979 (Caribbean pipefish) * '' Syngnathus carinatus'' ( C. H. Gilbert, 1892) * '' Syngnathus caspius'' Eichwald, 1831 * '' Syngnathus chihiroe'' Matsunuma, 2017 Matsunuma, M. (2017): ''Syngnathus chihiroe'', a new species of pipefish (Syngnathidae) from southern Japan. ''Zootax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovipositor
The ovipositor is a tube-like organ used by some animals, especially insects, for the laying of eggs. In insects, an ovipositor consists of a maximum of three pairs of appendages. The details and morphology of the ovipositor vary, but typically its form is adapted to functions such as preparing a place for the egg, transmitting the egg, and then placing it properly. For most insects, the organ is used merely to attach the egg to some surface, but for many parasitic species (primarily in wasps and other Hymenoptera), it is a piercing organ as well. Some ovipositors only retract partly when not in use, and the basal part that sticks out is known as the scape, or more specifically oviscape, the word ''scape'' deriving from the Latin word '' scāpus'', meaning "stalk" or "shaft". In insects Grasshoppers use their ovipositors to force a burrow into the earth to receive the eggs. Cicadas pierce the wood of twigs with their ovipositors to insert the eggs. Sawflies slit the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygote
A zygote (, ) is a eukaryotic cell formed by a fertilization event between two gametes. The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic information of a new individual organism. In multicellular organisms, the zygote is the earliest developmental stage. In humans and most other anisogamous organisms, a zygote is formed when an egg cell and sperm cell come together to create a new unique organism. In single-celled organisms, the zygote can divide asexually by mitosis to produce identical offspring. German zoologists Oscar and Richard Hertwig made some of the first discoveries on animal zygote formation in the late 19th century. Humans In human fertilization, a released ovum (a haploid secondary oocyte with replicate chromosome copies) and a haploid sperm cell (male gamete) combine to form a single diploid cell called the zygote. Once the single sperm fuses with the oocyte, the latter completes the division of the second ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Courtship
Courtship is the period wherein some couples get to know each other prior to a possible marriage. Courtship traditionally may begin after a betrothal and may conclude with the celebration of marriage. A courtship may be an informal and private matter between two people or may be a public affair, or a formal arrangement with family approval. Traditionally, in the case of a formal engagement, it is the role of a male to actively "court" or "woo" a female, thus encouraging her to understand him and her receptiveness to a marriage proposal. Duration The average duration of courtship varies considerably throughout the world. Furthermore, there is vast individual variation between couples. Courtship may be completely omitted, as in cases of some arranged marriages where the couple do not meet before the wedding. In the United Kingdom, a poll of 3,000 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syngnathus
''Syngnathus'' is a genus of fish in the family Syngnathidae found in marine, brackish and sometimes fresh waters of the Atlantic, Indian and Pacific Ocean. Fossils of these species are found from the Oligocene to the Pleistocene. They are known from various localities of Greece, Italy, Germany and United States. Species There are currently 36 recognized species in this genus: * '' Syngnathus abaster'' A. Risso, 1827 (Black-striped pipefish) * '' Syngnathus acus'' Linnaeus, 1758 (Greater pipefish) * '' Syngnathus affinis'' Eichwald, 1831 * '' Syngnathus auliscus'' ( Swain, 1882) (Barred pipefish) * '' Syngnathus californiensis'' D. H. Storer, 1845 (Kelp pipefish) * '' Syngnathus caribbaeus'' C. E. Dawson, 1979 (Caribbean pipefish) * '' Syngnathus carinatus'' ( C. H. Gilbert, 1892) * '' Syngnathus caspius'' Eichwald, 1831 * '' Syngnathus chihiroe'' Matsunuma, 2017 Matsunuma, M. (2017): ''Syngnathus chihiroe'', a new species of pipefish (Syngnathidae) from southern Japan. ''Z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placenta
The placenta is a temporary embryonic and later fetal organ that begins developing from the blastocyst shortly after implantation. It plays critical roles in facilitating nutrient, gas and waste exchange between the physically separate maternal and fetal circulations, and is an important endocrine organ, producing hormones that regulate both maternal and fetal physiology during pregnancy. The placenta connects to the fetus via the umbilical cord, and on the opposite aspect to the maternal uterus in a species-dependent manner. In humans, a thin layer of maternal decidual (endometrial) tissue comes away with the placenta when it is expelled from the uterus following birth (sometimes incorrectly referred to as the 'maternal part' of the placenta). Placentas are a defining characteristic of placental mammals, but are also found in marsupials and some non-mammals with varying levels of development. Mammalian placentas probably first evolved about 150 million to 200 million years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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