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  2. Swordfish - Wikipedia

    en.wikipedia.org/wiki/Swordfish

    Such fish are sold as "pumpkin swordfish", and command a premium over their whitish counterparts. [citation needed] Swordfish is a particularly popular fish for cooking. Since swordfish are large, meat is usually sold as steaks, which are often grilled. Swordfish meat is relatively firm, and can be cooked in ways more fragile types of fish ...

  3. Fish reproduction - Wikipedia

    en.wikipedia.org/wiki/Fish_reproduction

    Marine fish can produce high numbers of eggs which are often released into the open water column. The eggs have an average diameter of 1 millimetre (0.039 in). The eggs are generally surrounded by the extraembryonic membranes but do not develop a shell, hard or soft, around these membranes. Some fish have thick, leathery coats, especially if ...

  4. Pregnancy in fish - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_in_fish

    A pregnant Southern platyfish. Pregnancy has been traditionally defined as the period of time eggs are incubated in the body after the egg-sperm union. [1] Although the term often refers to placental mammals, it has also been used in the titles of many international, peer-reviewed, scientific articles on fish.

  5. Trematode life cycle stages - Wikipedia

    en.wikipedia.org/wiki/Trematode_life_cycle_stages

    The life cycle of a typical trematode begins with an egg. Some trematode eggs hatch directly in the environment (water), while others are eaten and hatched within a host, typically a mollusc. The hatchling is called a miracidium, a free-swimming, ciliated larva. Miracidia will then grow and develop within the intermediate host into a sac-like ...

  6. Fish physiology - Wikipedia

    en.wikipedia.org/wiki/Fish_physiology

    The body of a fish is denser than water, so fish must compensate for the difference or they will sink. Many bony fishes have an internal organ called a swim bladder, or gas bladder, that adjusts their buoyancy through manipulation of gases. In this way, fish can stay at the current water depth, or ascend or descend without having to waste ...

  7. Parthenogenesis - Wikipedia

    en.wikipedia.org/wiki/Parthenogenesis

    [9] [10] [11] This type of reproduction has been induced artificially in a number of animal species that naturally reproduce through sex, including fish, amphibians, and mice. [ 12 ] [ 13 ] Some species reproduce exclusively by parthenogenesis (such as the bdelloid rotifers ), while others can switch between sexual reproduction and parthenogenesis.

  8. Batomorphi - Wikipedia

    en.wikipedia.org/wiki/Batomorphi

    Batoids reproduce in a number of ways. As is characteristic of elasmobranchs, batoids undergo internal fertilization . Internal fertilization is advantageous to batoids as it conserves sperm, does not expose eggs to consumption by predators, and ensures that all the energy involved in reproduction is retained and not lost to the environment. [ 6 ]

  9. Roe - Wikipedia

    en.wikipedia.org/wiki/Roe

    Roe, (/ r oʊ / ⓘ ROH) or hard roe, is the fully ripe internal egg masses in the ovaries, or the released external egg masses, of fish and certain marine animals such as shrimp, scallop, sea urchins and squid.