Glossary

67 terms beginning with I · showing 1–40

1. ich

   Common name for Ichthyophthirius multifiliis, a protozoan which infects freshwater fish. Commonly referred to as white spot due to the characteristic white nodules formed under the skin or gill tissue during the feeding stage of its life cycle.

   Used in 18 profiles

2. ichthyocide

   A chemical or organic substance which kills fishes.

3. ichthyofauna

   The fish life inhabiting a particular habitat, country, or region.

   Used in 3 profiles

4. ichthyolite

   A fossil or fossilized part of a fish.

5. ichthyology

   Branch of zoology concerned with the study of fishes.

   Used in 3 profiles

6. ichthyophagous

   Eating or otherwise subsisting on fishes.

7. ichthyotoxin

   Any toxic substance derived from fishes.

   Used in 1 profile

8. ICZN

   Abbreviation for The International Commission on Zoological Nomenclature, the organisation responsible for producing and regulating the International Code of Zoological Nomenclature.

   Used in 23 profiles

9. ICZN Code

   The International Code of Zoological Nomenclature, the current edition of which is located here.

   Used in 1 profile

10. identification key

    Printed or computer-aided table or other device assisting identification of species. Normally presented in the form of a single-access key.

    Used in 4 profiles

11. igapó

    Type of seasonally-inundated floodplain forest in the Amazon region. The term is normally used for those forests flooded by blackwater rivers.

    Used in 3 profiles

12. igarapé

    Minor tributary stream or small river in the Amazon region, the name deriving from the native nheengatu language. It literally translates as 'canoe path' since most igarapés are navigable by canoe or small boat and they are traditionally important as a means of transport and communication.

    Used in 22 profiles

13. impoundment

    A body of water, such as a reservoir, formed by artificially-aided accumulation and storage.

    Used in 11 profiles

14. in-situ

    In its original place or position.

    Used in 102 profiles

15. in-situ conservation

    Process of protecting and maintaining an organism within its natural habitat.

16. inbreeding

    Breeding between related individuals within an isolated or otherwise closed group of organisms. Can lead to inbreeding depression but also practised intentionally by ornamental fish breeders in order to maintain or develop particular traits.

    Used in 58 profiles

17. inbreeding depression

    Reduced fitness in a given population or group of organisms as a result of inbreeding.

18. incertae sedis

    In zoological nomenclature, of uncertain taxonomic position.

    Used in 110 profiles

19. incipient

    Beginning to appear or develop, e.g., emergence of anatomical structures during a larval stage.

20. incisiform

    Having the form of or resembling a mammalian incisor tooth; chisel-shaped. Used in reference to the shape of teeth found in some fishes, e.g., certain members of the family Serrasalmidae.

21. incubation period

    Period of time between fertilisation and hatching.

    Used in 122 profiles

22. indented

    Used in reference to a structure, e.g., a fin, with a small notch in the middle. Similar to emarginate.

    Used in 1 profile

23. Indian almond leaf

    Vernacular name for leaves of the leadwood tropical tree species Terminalia catappa which are commonly sold dried for use in aquaria because the organic compounds contained within them are considered beneficial for certain fish species. In particular they may aid in simulation of blackwater conditions and inhibit the growth of some undesirable microorganisms, as well as proving an effective addition to a natural-looking display. Also known as Ketapang leaf, presumably in reference to the city of that name in West Kalimantan province, Indonesian Borneo.

    Used in 10 profiles

24. indigenous

    Produced, growing, living, or occurring naturally in a given region, country, or environment

    Used in 6 profiles

25. induced breeding

    Artificially stimulating a fish species to reproduce in captivity.

    Used in 1 profile

26. inferior mouth

    Mouth located on the ventral surface of the head and oriented downwards.

    Used in 7 profiles

27. infra

    Below. Often used as a prefix.

    Used in 2 profiles

28. infraorbital

    Of, relating to, located on, or being the region below the eye.

    Used in 131 profiles

29. infraorbital canal

    Section of the lateral-line system located below the eye. Almost extends to the snout.

30. infusoria

    Collective term for certain members of the protozoan Phylum Ciliophora, of which it is considered a subclass in certain classification systems. Members naturally inhabit infusions of decomposing organic material and some are cultured by aquarists in order to feed very small fish fry. The name was formerly applied to a much larger group of aquatic microorganisms which also included some other protist groups and unicellular algae.

    Used in 186 profiles

31. ingroup

    In phylogenetics or cladistics, the particular group under scrutiny in a study. Opposite of outgroup.

32. innate

    Inborn; inherited.

33. inorganic

    Not being composed of organic matter; of or relating to such substances; of, relating to or being a substance that does not contain carbon.

34. insectivore

    An organism feeding only or mostly on insects and their larvae.

    Used in 4 profiles

35. insertion

    Point on the body of a fish at which emerges the front or rear edge of a fin.

    Used in 42 profiles

36. insular

    Isolated or separated.

37. integument

    Outer protective covering, e.g., the skin of an organism or the membrane enclosing an organ.

    Used in 1 profile

38. interbreed

    To breed with another race or species; hybridise.

    Used in 11 profiles

39. interbreeding

    See interbreed.

40. intercalarium

    A Weberian ossicle.