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Results for “od”

Ichthyological terms, not general ones.

Species 29Articles 2Glossary 326

  • allelopathy

    A biological phenomenon by which an organism produces one or more biochemicals that affect the growth, survival, and reproduction of others. Typical in certain plants, algae, bacteria, coral, and fungi.

  • allometry

    The growth of body parts at different rates, resulting in a change of body proportions; the study of this phenomenon.

  • allopatric

    Occurring in separate, nonoverlapping geographic areas. Often used to refer to geographically-separated, reproductively-isolated populations of related organisms. Opposite of sympatric.

    Used in 2 profiles

  • amphibian

    A class of cold-blooded vertebrates, generally requiring water for reproduction.

    Used in 32 profiles

  • amphidromous

    Migrating from fresh to salt water or from salt to fresh water at some stage of the life cycle other than the breeding period.

    Used in 34 profiles

  • amphidromy

    A form of diadromy in which fishes migrate between fresh and marine water as part of their life cycle for some purpose other than spawning, e.g., newly-hatched, arvae may be swept downstream into the sea where they spend a period of time before migrating back into fresh water to mature and eventually reproduce.

    Used in 15 profiles

  • anal-fin

    A median, unpaired, ventral fin located between the anus and caudal fin, usually in the posterior portion of the body. Used to maintain equilibrium and stability.

    Used in 764 profiles

  • anal-fin origin

    Anteriormost point at which the anal fin base is attached to the body.

    Used in 108 profiles

  • anchor worm

    Member of the copepod crustacean genus Lernaea. Adult females are parasitic on freshwater fishes.

  • antihelminthic

    Substance or medication that destroys or expels parasitic worms from the body. Same meaning as anthelmintic.

    Used in 1 profile

  • aplacental viviparity

    Also known as ovoviviparity. Method of reproduction employed by certain fishes in which the eggs are fertilised and develop inside the female but there is no placental connection. The juveniles are free-swimming and able to feed as soon as they leave the female's body.

  • aquaculture

    Commerical production of marine or freshwater food fish or shellfish under controlled conditions. Sometimes referred to as 'fish farming'.

    Used in 34 profiles

  • armoured

    Used in reference to certain fishes which have protective, typically bony, plates or scutes on the body, e.g., armoured catfishes.

    Used in 107 profiles

  • Artemia

    Commonly known as brine shrimp; a genus of phyllopod crustacean inhabiting salt lakes and brines. Cultivated as food for aquarium fishes and available live, frozen or freeze-dried. Its newly-hatched nauplii are also a popular food for fish fry.

    Used in 1,159 profiles

  • arthrobranch

    A decapod gill associated with the articular membrane between the coxa of an appendage and the body.

  • Asellus

    Genus of isopod crustaceans in the family Asellidae. Contains the well-known 'water louse', Asellus aquaticus.

    Used in 8 profiles

  • astaxanthin

    Carotenoid pigment found naturally in some fishes, crustaceans, microalgae and yeasts. Known to improve conditioning/colouration and used in some fish foods.

    Used in 2 profiles

  • automatic feeder

    Automated device used to regulate feeding of prepared foods to fishes in the aquarium hobby and intensive aquaculture.

  • autotroph

    An organism capable of synthesising its own food via inorganic light or chemical energy, e.g., green plants, algae.