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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.
Poecilia velifera, known as the Yucatan molly and also as the giant sailfin molly amongst aquarists, [3] is a large livebearer that lives in coastal waters of the Yucatan Peninsula. These live-bearer ( Poeciliidae ) fish are particularly well known for both the extreme size variation among males, and the sexual dimorphism between males and ...
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.
Gold mollies are yellow-gold like albino mollies but have dark eyes and occasionally scales edged in red. [3] Silver mollies have had all pigments but silver eliminated through selective breeding. [3] Chocolate mollies exhibit brown rather than black coloration. [3] In addition to the colors, fancy mollies differ in the shape of their fins. [3]
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Amazon mollies have a small dorsal fin consisting of 10-12 soft rays. [9] The position of the dorsal fin on the back of the fish is anterior, closer towards the head, than the position of the anal fin on the underside of the fish. They do not have any spiny rays on their fins. [10]
Sailfin mollies produce broods of 10–140 live young, depending on maturity and size, and females may store sperm long after the demise of their relatively short-lived mates. The gestation period for this species is about three to four weeks, depending upon temperature, and a single female may give birth on multiple occasions throughout the year.
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).