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  2. Guppy - Wikipedia

    en.wikipedia.org/wiki/Guppy

    The development and exhibiting of color patterns in male guppies is usually due to the amount of thyroid hormone that they contain. The thyroid hormones not only influence color pattern, but control endocrine function in response to their environment. [13]

  3. Poecilia wingei - Wikipedia

    en.wikipedia.org/wiki/Poecilia_wingei

    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.

  4. Fish reproduction - Wikipedia

    en.wikipedia.org/wiki/Fish_reproduction

    Salmon Fry hatching. The larva has grown around what is left of the yolk; the remains of the soft, transparent egg are discarded. The eggs of fish and amphibians are jellylike. Cartilagenous fish (sharks, skates, rays, chimaeras) eggs are fertilized internally and exhibit a wide variety of both internal and external embryonic development. Most ...

  5. Livebearers - Wikipedia

    en.wikipedia.org/wiki/Livebearers

    Guppy fry. Livebearers are fish that retain their eggs inside the body and give birth to live, free-swimming young. They are especially prized by aquarium owners. Among aquarium fish, livebearers are nearly all members of the family Poeciliidae and include: guppies, mollies, platies and swordtails.

  6. 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 ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Juvenile fish - Wikipedia

    en.wikipedia.org/wiki/Juvenile_fish

    When they have developed to the point where they are capable of feeding by themselves, the fish are called fry. When, in addition, they have developed scales and working fins , the transition to a juvenile fish is complete and it is called a fingerling , so called as they are typically about the size of human fingers .

  9. Poeciliidae - Wikipedia

    en.wikipedia.org/wiki/Poeciliidae

    Poeciliidae are a family of freshwater ray-finned fishes of the order Cyprinodontiformes, the tooth-carps, and include well-known live-bearing aquarium fish, such as the guppy, molly, platy, and swordtail.