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Poecilia vandepolli, or Van de Poll's molly, is a poeciliid fish native to the ABC islands of the Lesser Antilles, namely Aruba, Bonaire, and Curaçao. It is a euryhaline species and one of the most common fish in its range , inhabiting fresh, brackish , salt, and hypersaline waters.
Poecilia sphenops, called the Mexican molly or simply the molly, is a species of poeciliid fish from Central America. It was once understood as a widespread species with numerous local variants ranging from Mexico to Venezuela, but these variants are today considered distinct species belonging to the P. sphenops complex and P. sphenops itself as being native to Mexico, Guatemala, and Honduras.
The sailfin molly is a tolerant species, as it can exploit the thin film of oxygen-rich surface water with its upturned mouth, so is able to survive oxygen-depleted habitats. A euryhaline species, the sailfin molly may be found in a variety of saline environments, tolerating salinities as high as 87 ppt [10] and breeding in brackish waters.
Poecilia catemaconis, the bicolor molly, is a livebearer fish from Mexico. Poecilia catemaconis belongs to the Poecilia sphenops species complex within the Mollienesia subgenus . It is most closely related to P. sphenops , being derived from an Atlantic -slope population of that species. [ 1 ]
The most commonly kept species are guppies (P. reticulata), mollies (P. sphenops or P. latipinna), and Endler's livebearers . Members of the genus readily hybridize with each other and so most commercially offered fish are hybrids (with guppies having some Endler, and mollies being a mix of common and sailfin mollies).
The fish lives in tropical freshwater and brackish water habitats. [2] The shortfin molly is considered benthopelagic. [2] It lives in a pH range between 7.0 and 7.5 at temperatures between 22 and 28 degrees Celsius. [2] The species does not migrate. [2] It is an invasive species in the Muddy River of Nevada, USA. [4]
Poecilia gillii is a livebearer, meaning that females give birth to live fry. [3] It reproduces continuously year-round, with most juveniles appearing in August. [2]In some poeciliid species, e.g. P. latipinna and Xiphophorus multilineatus, large males court females while small males instead rely on chasing and sneaking up on the females to copulate.
Poecilia kykesis, also known as the Usumacinta molly, Petén molly, spiketail molly, or swordtail molly, is a poeciliid fish species native to the fresh and brackish waters of Mexico, Guatemala, and Belize. It belongs to the sailfin molly clade, with males exhibiting an enlarged dorsal fin.