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The knife livebearer is native to the Central American countries of Costa Rica, Panama and Nicaragua. [1] It is usually found in small groups in slow to moderately fast flowing creeks and ditches and in the shorelines of large rivers, [5] but it is a powerful swimmer [2] and has also been recorded inhabiting a fast flowing stream in a rainforest.
An extensive list of the freshwater fish found in California, including both native and introduced species ... Porthole Livebearer: Poecillopsis gracilis: Inland ...
Poeciliopsis prolifica, or the blackstripe livebearer, is a species of small freshwater fish in the family Poeciliidae.It is endemic to Mexico. [3] It is a viviparous species and the female can have several clutches of young developing internally at the same time, hence the specific name prolifica, from the Latin proles, "offspring" and ferax, "rich, fruitful" in reference to the great number ...
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). [9]
Some of the world's most popular aquarium fish such as guppies, swordtails and mollies are from this subfamily. [2] They have been introduced to many regions in the world, either accidentally or to control mosquitoes, and have become invasive species threatening local populations of similar, small fishes. [ 3 ]
Brachyrhaphis roseni was scientifically described by William Bussing in 1988, but was known to livebearers enthusiasts from the 1960s. [3] It grows to 6 cm. The fish have a slightly arched body and twelve dark vertical stripes, which are normally more prominent in males. The dorsal fin is half orange with a dark margin.
The doomsday fish got its name because it looks like a mythical sea creature, with a long, ribbon-shaped body that can grow up to 30 feet. Rare "doomsday fish" spotted on a Southern California ...
Poeciliopsis gracilis (Heckel, 1848) (Porthole livebearer) Poeciliopsis hnilickai (M. K. Meyer & Vogel, 1981) (Upper Grijalva livebearer) Poeciliopsis infans (Woolman, 1894) (Lerma livebearer) Poeciliopsis latidens (Garman, 1895) (Lowland livebearer) Poeciliopsis lucida (R. R. Miller, 1960) (Clearfin livebearer) Poeciliopsis lutzi (Meek, 1902 ...