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Sexual polymorphism exhibited in the Trinidadian guppy (above male, below female) Guppy breeds Guppies exhibit sexual dimorphism . While wild-type females are grey in body colour, males have splashes, spots, or stripes that can be any of a wide variety of colors. [ 12 ]
Poecilia wingei is a very colorful guppy species, similar to the fancy guppy often found in pet shops. The species was first collected from Laguna de Patos in Venezuela by Franklyn F. Bond in 1937, and rediscovered by Dr. John Endler in 1975.
Poecilia parae, also known as the melanzona guppy, is a species of fish from the family Poeciliidae which is found in northern South America from Guyana to the mouth of the Amazon River. [ 1 ] Colour polymorphism
Guppies are located across several isolated streams in Trinidad and male colour patterns differ geographically. Female guppies have no coloration but their preference for these colour patterns also vary across locations. In a mate choice study, female guppies were shown to prefer males with colour patterns that are typical of their home stream ...
The female-biased sexual size dimorphism observed in many taxa evolved despite intense male-male competition for mates. [28] In Osmia rufa, for example, the female is larger/broader than males, with males being 8–10 mm in size and females being 10–12 mm in size. [29] In the hackberry emperor females are similarly larger than males. [30]
UV reflective colour patterns also enhance male attractiveness in guppies and three-spined sticklebacks. In experimental settings, female guppies spent significantly more time inspecting males with UV-reflective colouring than those with UV reflection blocked. [24]
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).
Guppy Fancy Guppy Poecilia reticulata: 5 cm (2.0 in) Many color and tail pattern varieties exist. They generally need a ratio of 1 male to 2 females or more. All guppies and mollies are hardy fish that tolerate lower oxygen levels and temperatures than most aquarium fish, give birth to live young, and readily breed in home tanks.