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Viviparous fish are fish that give birth to live young, the eggs develop whilst receiving nutrition from the parent.. See also:Category:Ovoviviparous fish - fish which give birth to live young which do not receive nourishment from the parent whilst in the womb.
Zenarchopteridae, the viviparous halfbeaks, is a family of ray-finned fishes in the order Beloniformes. The Zenarchopteridae exhibit strong sexual dimorphism , practicing internal fertilisation , and in some cases ovoviviparous or viviparous (the family also includes oviparous species).
The viviparous eelpout feeds on bottom-dwelling invertebrates, such as crustaceans, and fish eggs and fry. [6] Adults mate during the months of August and September using internal fertilisation. The fish are notably viviparous, giving birth to 30–400 live developed young. Unusually, it does so during winter when water temperatures are ...
An aphid giving viviparous birth, an unusual mode of reproduction among insects. In animals, viviparity is development of the embryo inside the body of the mother, with the maternal circulation providing for the metabolic needs of the embryo's development, until the mother gives birth to a fully or partially developed juvenile that is at least metabolically independent.
Livebearers are fish that retain their eggs inside the body and give birth to live, free-swimming young. They are especially prized by aquarium owners. Among aquarium fish, livebearers are nearly all members of the family Poeciliidae and include: guppies, mollies, platies and swordtails. [1]
Other spawning animals which are semelparous include mayflies, squid, octopus, smelt, capelin and some amphibians. [6] Semelparity is often associated with r-strategists. However, most fish and other spawning animals are iteroparous. When the internal ovaries or egg masses of fish and certain marine animals are ripe for spawning they are called ...
Fish are very diverse animals and can be categorised in many ways. Although most fish species have probably been discovered and described, about 250 new ones are still discovered every year. According to FishBase about 34,800 species of fish had been described as of February 2022, [ 5 ] which is more than the combined total of all other ...
Live-bearing fish exhibit either vivipary or ovovivipary and sometimes both. Note : If a species or grouping of fish species appears here and is known to be either ovoviviparous or viviparous please redirect to the relevant category.