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  2. Amazon molly - Wikipedia

    en.wikipedia.org/wiki/Amazon_molly

    The Amazon molly (Poecilia formosa) is a freshwater fish native to the warm waters of northeastern Mexico and the southern parts of the U.S. state of Texas. [1] [3] It reproduces through gynogenesis, and essentially all individuals are females.

  3. Fish reproduction - Wikipedia

    en.wikipedia.org/wiki/Fish_reproduction

    Most normal female fish have two ovaries. In some elasmobranchs, only the right ovary develops fully. In the primitive jawless fish, and some teleosts, there is only one ovary, formed by the fusion of the paired organs in the embryo. [2] Fish ovaries may be of three types: gymnovarian, secondary gymnovarian or cystovarian.

  4. Cherry barb - Wikipedia

    en.wikipedia.org/wiki/Cherry_barb

    The cherry barb is a small elongated fish with a relatively compressed body. It reaches 5 cm (2 in) in length. [2] The female is fawn-colored on top with a slight greenish sheen. Its sides and belly have gleaming silver highlights. It may have a rosy tone on its back and upper sides.

  5. Pregnancy in fish - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_in_fish

    Many members of the fish family Poeciliidae are considered to be lecithotrophic, however, research is increasingly showing that others are matrotrophic. [11] "Aplacental viviparity" occurs when the female retains the embryos during the entire time of development but without any transfer of nutrients to the young.

  6. 32 types of saltwater fish for your aquarium - AOL

    www.aol.com/32-types-saltwater-fish-aquarium...

    A companionable fish, these gobies thrive in a male/female pair. Also known as orange-dashed goby, orange spotted glider goby; scientific name valenciennea puellaris. Maximum length: 6.7 inches

  7. Mosquitofish - Wikipedia

    en.wikipedia.org/wiki/Mosquitofish

    The male mosquitofish uses this tubular fin to secrete milt into the female's genital aperture in the process of internal fertilization. [3] [11] [2] The female's genital aperture is located just behind the anal fin and is an opening for the milt to fertilize the ova within the ovary. [11]

  8. Anglerfish - Wikipedia

    en.wikipedia.org/wiki/Anglerfish

    After fusing, males increase in volume and become much larger relative to free-living males of the species. They live and remain reproductively functional as long as the female lives, and can take part in multiple spawnings. [4] This extreme sexual dimorphism ensures that when the female is ready to spawn, she has a mate immediately available. [36]

  9. 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]

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