A seahorse is any of 46 species of small marine bony fish in the genus Hippocampus. "Hippocampus" comes from the Ancient Greek hippókampos (ἱππόκαμπος), itself from híppos (ἵππος) meaning "horse" and kámpos (κάμπος) 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 they form the family Syngnathidae.
The Syngnathidae is a family of fish which includes seahorses, pipefishes, and seadragons. The name is derived from Ancient Greek: σύν, meaning "together", and γνάθος, meaning "jaw". The fused jaw is one of the traits that the entire family have in common.
Male pregnancy is the incubation of one or more embryos or fetuses by organisms of the male sex in some species. Most species that reproduce by sexual reproduction are heterogamous—females producing larger gametes (ova) and males producing smaller gametes (sperm). In nearly all animal species, offspring are carried by the female until birth, but in fish of the family Syngnathidae, males perform that function.
Pipefishes or pipe-fishes (Syngnathinae) are a subfamily of small fishes, which, together with the seahorses and seadragons, form the family Syngnathidae.
The greater pipefish is a pipefish of the family Syngnathidae. It is a seawater fish and the type species of the genus Syngnathus.
Parental care is a behavioural and evolutionary strategy adopted by some animals, involving a parental investment being made to the evolutionary fitness of offspring. Patterns of parental care are widespread and highly diverse across the animal kingdom. There is great variation in different animal groups in terms of how parents care for offspring, and the amount of resources invested by parents. For example, there may be considerable variation in the amount of care invested by each sex, where females may invest more in some species, males invest more in others, or investment may be shared equally. Numerous hypotheses have been proposed to describe this variation and patterns in parental care that exist between the sexes, as well as among species.
The black-striped pipefish is a species of fish in the family Syngnathidae. It is found in the eastern Atlantic from the southern Gulf of Biscay to Gibraltar, also in the Mediterranean and Black Seas. As the introduced species it is mentioned in the Caspian Sea and fresh waters of its basin.
The broadnosed pipefish or deepnosed pipefish is a fish of the family Syngnathidae. It is native to the Eastern Atlantic ocean from Vardø in Norway, the Baltic Sea and the British Isles in the north all the way 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.
The southern pipefish is a pipefish species that inhabits the Southwest Atlantic near Uruguay. It is a marine subtropical demersal fish. This species has been recorded among beds of Ruppia maritima in the Lagoa dos Patos in southern Brazil, and apparently they spend the whole of their lives in sea grass beds. It is a carnivorous species which feeds mainly on copepods and isopods, although the females consume a wider variety of prey. It is an ovoviviparous fish, in which the males bear the fertilised eggs inside a brood pouch located beneath its tail. During the breeding season they are sexually dimorphic which indicates that the species is probably polygamous.
The chain pipefish is a pipefish species. It inhabits the western Atlantic from Virginia, Bermuda and northern Gulf of Mexico to Campeche and Jamaica, but is absent from the Bahamas. It is a marine subtropical reef-associated fish, up to 38 cm length.
The Gulf pipefish is a species of pipefish in the member of the taxonomic family Sygnathidae. Syngnathus scovelli is native to the region of south Florida, United States, the Atlantic Ocean, etc. S. scovelli is similar to Microphis brachyurus.
The Yucatán pipefish is a demersal fish species native to the Gulf of Mexico.
Syngnathus dawsoni is a species of the pipefishes. It occurs in the central, western Atlantic in the Caribbean Sea from Puerto Rico to St. Lucia and has been recorded only from the east of the Mona Passage. It is a marine tropical demersal fish. It is ovoviviparous; the male carries the fertilized eggs in a brood pouch located under his tail. It has been captured at around 7 metres (23 ft) in shallow, inshore water but its habits and ecology are unknown.
The robust ghost pipefish, also known as the blue-finned ghost pipefish, Racek's ghost pipefish, robust-snouted ghost pipefish, or the squaretail ghost-pipefish, is a species of false pipefish belonging to the family Solenostomidae. Its appearance can vary greatly due to its ability to change colors over several hours, but the general body shape and fin shapes allow it to mimic a piece of seagrass.
Syngnathus temminckii is the most common pipefish in southern African estuaries, ranging from Walvis Bay (Namibia) to the Tugela River on the east coast of South Africa.
Polyandry in fishes is a mating system where females mate with multiple males within one mating season. This type of mating exists in a variety of animal species. Polyandry has been found in both oviparous and viviparous bony fishes and sharks. General examples of polyandry occur in fish species, such as green swordtails and Trinidadian guppies. Specific types of polyandry have also been classified, such as classical polyandry in pipefish cooperative polyandry in cichlids and convenience polyandry in sharks.
Pregnancy has been traditionally defined as the period of time eggs are incubated in the body after the egg-sperm union. Although the term often refers to placental mammals, it has also been used in the titles of many international, peer-reviewed, scientific articles on fish, e.g. Consistent with this definition, there are several modes of reproduction in fish, providing different amounts of parental care. In ovoviviparity, there is internal fertilization and the young are born live but there is no placental connection or significant trophic (feeding) interaction; the mother's body maintains gas exchange but the unborn young are nourished by egg yolk. There are two types of viviparity in fish. In histotrophic viviparity, the zygotes develop in the female's oviducts, but she provides no direct nutrition; the embryos survive by eating her eggs or their unborn siblings. In hemotrophic viviparity, the zygotes are retained within the female and are provided with nutrients by her, often through some form of placenta.
Hippichthys spicifer, commonly known as bellybarred pipefish, banded freshwater pipefish, or blue spotted pipefish, is a species of pipefish of the family Syngnathidae. It is found in the Indo-Pacific, from the Red Sea and East Africa to Sri Lanka and Samoa. It lives in shallow coastal and estuarine habitats such as mangroves, tidal creeks, and the lower reaches of rivers, where it can grow to lengths of 18 centimetres (7.1 in). It is expected to feed on small crustaceans and mosquito larvae. This species is ovoviviparous, with males brooding eggs in a brood pouch before giving birth to live young. It is reproductively active all year, with males and females reaching sexual maturity at 10.8 and 10 centimetres respectively. Brood size can vary significantly, from 114 to 1764, with an average of 604.4 plus or minus 322.8.
Histiogamphelus briggsii, also known as Brigg's pipefish or crested pipefish, is a species of marine fish in the family Sygnathidae. It can be found in the shallow waters surrounding South Australia, Victoria, New South Wales, and Northern Tasmania. Its habitat can consist of reefs, seagrass beds, and sandy beach and estuarine environments Individuals of this species can grow to lengths of 25 cm (9.8 in). They are an ovoviviparous species, in which males brood eggs and give birth to live young.
Urocampus nanus, commonly known as the barbed pipefish, is a species of marine fish belonging to the family Syngnathidae. This family consists of 56 different genera and 320 species.
