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  2. Buenos Aires tetra - Wikipedia

    en.wikipedia.org/wiki/Buenos_Aires_tetra

    The tetra is a tropical, silver metallic-colored fish, with red-tipped fins and a black marking on the dorsal fin. The tetra is a hardy community fish for beginners, and is optimal for the beginning fish hobbyist. [4] It is also relatively large for a tetra, growing up to 7.5 cm (3 inches). [4] They can live up to 5 or 6 years.

  3. Fish reproduction - Wikipedia

    en.wikipedia.org/wiki/Fish_reproduction

    However, most fish do not possess seminiferous tubules. Instead, the sperm are produced in spherical structures called sperm ampullae. These are seasonal structures, releasing their contents during the breeding season, and then being reabsorbed by the body. Before the next breeding season, new sperm ampullae begin to form and ripen.

  4. Rummy-nose tetra - Wikipedia

    en.wikipedia.org/wiki/Rummy-nose_tetra

    The breeding aquarium for the rummy-nose tetra, in addition, needs to be sterilised prior to use, as the fish produces eggs that are notoriously sensitive to bacterial and fungal infection. Use of an antifungal agent is strongly advised once spawning is completed in order to prevent various fungi from attacking the eggs.

  5. Cardinal tetra - Wikipedia

    en.wikipedia.org/wiki/Cardinal_tetra

    The cardinal tetra is a very popular aquarium fish, but is less widespread than the neon tetra because until recently, it was difficult to breed in captivity. However, many breeders are now producing the fish; in most cases, one can determine if the cardinal tetra is bred or wild-caught due to damaged fins on wild-caught specimens.

  6. Livebearers - Wikipedia

    en.wikipedia.org/wiki/Livebearers

    Among aquarium fish, livebearers are nearly all members of the family Poeciliidae and include: guppies, mollies, platies and swordtails. [ 1 ] The advantages of livebearing to the aquarist are that the newborn juvenile fish are larger than newly-hatched fry, have a lower chance of mortality and are easier to care for.

  7. Fish farming - Wikipedia

    en.wikipedia.org/wiki/Fish_farming

    Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture , which is the controlled cultivation and harvesting of aquatic animals such as fish, crustaceans , molluscs and so on, in natural or pseudo-natural environments.

  8. Green swordtail - Wikipedia

    en.wikipedia.org/wiki/Green_swordtail

    One of the most popular tropical aquarium fish, the green swordtail has been bred into various hybrid forms for the aquarium hobby due to its hardiness and suitability for community tanks. [7] X. hellerii is a common laboratory animal and has been used as a model organism in studies involving female mate preference [8] and male conflict. [9]

  9. Ram cichlid - Wikipedia

    en.wikipedia.org/wiki/Ram_cichlid

    The ram cichlid (Mikrogeophagus ramirezi) is a species of freshwater fish endemic to the Orinoco River basin, in the savannahs of Venezuela and Colombia in South America. [3] The species has been examined in studies on fish behaviour [4] and is a popular aquarium fish, traded under a variety of common names, including ram, blue ram, German blue ram, Asian ram, butterfly cichlid, Ramirez's ...

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