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  2. Eel life history - Wikipedia

    en.wikipedia.org/wiki/Eel_life_history

    Traditional eel aquaculture operations rely on wild-caught elvers, but experimental hormone treatments in Japan have led to artificially spawned eels. Eggs from these treated eels have a diameter of about 1 mm, and each female can produce up to 10 million eggs. However, these treated eels may not solve the eel crisis.

  3. Pelican eel - Wikipedia

    en.wikipedia.org/wiki/Pelican_eel

    Not much is known about the reproductive habits of the pelican eel. Similar to other eels, when pelican eels are first born, they start in the leptocephalus stage, meaning that they are extremely thin and transparent. [20] Until they reach their juvenile stage, they interestingly have very small body organs and do not contain any red blood cells.

  4. American eel - Wikipedia

    en.wikipedia.org/wiki/American_eel

    This is an accepted version of this page This is the latest accepted revision, reviewed on 23 December 2024. Species of fish American eel Conservation status Endangered (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Anguilliformes Family: Anguillidae Genus: Anguilla Species: A. rostrata Binomial name Anguilla rostrata ...

  5. Eel - Wikipedia

    en.wikipedia.org/wiki/Eel

    Eels swim by generating waves that travel the length of their bodies. They can swim backward by reversing the direction of the wave. [9] Most eels live in the shallow waters of the ocean and burrow into sand, mud, or amongst rocks. Most eel species are nocturnal, and thus are rarely seen. Sometimes, they are seen living together in holes or ...

  6. European conger - Wikipedia

    en.wikipedia.org/wiki/European_conger

    When conger eels are between 5 and 15 years old, their bodies undergo a transformation, with the reproductive organs of both males and females increasing in size and the skeleton reducing in mass and the teeth falling out. [12] Females appear to increase in weight and size more than the males.

  7. Fish reproduction - Wikipedia

    en.wikipedia.org/wiki/Fish_reproduction

    Male cartilaginous fishes (sharks and rays), as well as the males of some live-bearing ray finned fishes, have fins that have been modified to function as intromittent organs, reproductive appendages which allow internal fertilization. In ray finned fish they are called gonopodiums or andropodiums, and in cartilaginous fish they are called claspers

  8. Anguillidae - Wikipedia

    en.wikipedia.org/wiki/Anguillidae

    This feature really separates the Anguillidae, freshwater eels, from other eels who have internal gill chambers. Many species have variegated skin which means they will vary in color depending on their environment so that they can maintain the highest grade of camouflage. The dorsal, anal and caudal fins are fused and pelvic fins are lacking.

  9. New Zealand longfin eel - Wikipedia

    en.wikipedia.org/wiki/New_Zealand_longfin_eel

    The New Zealand longfin eel (Anguilla dieffenbachii) is a species of freshwater eel that is endemic to New Zealand. It is the largest freshwater eel in New Zealand and the only endemic species – the other eels found in New Zealand are the native shortfin eel (Anguilla australis), also found in Australia, and the naturally introduced Australian longfin eel (Anguilla reinhardtii).