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2. Guppy - Wikipedia

   en.wikipedia.org/wiki/Guppy

   Female guppy choice plays an important role in multiple mating. Female guppies are attracted to brightly colored males, especially ones with orange spots on the flank. [29] Orange spots can serve as an indicator of better physical fitness, as orange-spotted males are observed to swim longer in a strong current. [30]

3. Pregnancy in fish - Wikipedia

   en.wikipedia.org/wiki/Pregnancy_in_fish

   Guppies are highly prolific livebearers [43] giving birth to between five and 30 fry, though under extreme circumstances, she may give birth to only one or two or over 100. The gestation period of a guppy is typically 21–30 days, but can vary considerably. The area where a pregnant guppy's abdomen meets the tail is sometimes called the ...

4. Polyandry in fish - Wikipedia

   en.wikipedia.org/wiki/Polyandry_in_fish

   Poeciliids are freshwater live-bearing fish and internal fertilizers that are able to store sperm for months, setting the stage for sperm competition and allowing female cryptic sperm choice. [1] These Poeciliid species include green swordtails, Xiphophorus helleri [1] and Trinidadian guppies, Poecilia reticulata. [3]

5. Poecilia wingei - Wikipedia

   en.wikipedia.org/wiki/Poecilia_wingei

   Poecilia wingei, known to aquarists as Endlers or Endler's livebearer, in the genus Poecilia, is a small fish native to the Paria Peninsula in Venezuela. [2] They are prolific breeders and often hybridize with guppies. These very colorful hybrids are the easiest to find being offered in pet-shops, typically under the name Endler's guppy.

6. Poecilia parae - Wikipedia

   en.wikipedia.org/wiki/Poecilia_parae

   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

7. Fish reproduction - Wikipedia

   en.wikipedia.org/wiki/Fish_reproduction

   The males do not have to compete with other males, and female anemone fish are typically larger. When a female dies a juvenile (male) anemone fish moves in, and "the resident male then turns into a female and reproductive advantages of the large female–small male combination continue". [22] In other fishes sex changes are reversible.