Results for “od”

heterotroph

An organism that cannot synthesise its own food and instead obtains nutrients from complex organic substances, usually animal or plant matter.

humeral spot

A marking on the body in the area analogous to the humerus, or shoulder. In fishes it's normally located above the pectoral-fin and behind the opercle. There may be more than a single such spot in some species.

Used in 42 profiles

husbandry

Agricultural cultivation or production of plants or livestock, especially domesticated varieties.

hybridisation

The process of crossing different species or populations of organisms in order to produce hybrids.

Used in 115 profiles

hydroponics

Method of growing plants in the absence of soil and using a nutrient solution. The plants may be rooted directly into the solution or in an inert medium such as rockwool or gravel.

hypersaline

Used in reference to bodies of water with a higher salinity than sea water.

Used in 11 profiles

hypoxia

Oxygen deficiency in blood or tissue.

Used in 16 profiles

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

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

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

impoundment

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

Used in 11 profiles

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

indigenous

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

Used in 6 profiles

induced breeding

Artificially stimulating a fish species to reproduce in captivity.

Used in 1 profile

insertion

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

Used in 42 profiles

intromittent

Used in reference to a modified fin of a male which aids in transfer of gametes to the female during reproduction.

Used in 4 profiles

invalid

In zoological nomenclature, of an available name or nomenclatural act that is not valid under the ICZN code.

Used in 43 profiles

isthmus

Narrow strip of land connecting two larger areas, or a narrow strip of tissue connecting two larger body parts. In ichthyology often used in reference to the fleshy throat region of a fish which externally separates the two gill chambers.

Used in 26 profiles

jaw

Any of the bony or cartilaginous structures forming the framework of the mouth, usually vertically opposed, often bearing teeth and primarily used for acquisition of food. Often modified in fishes to form complex protrusible or sucking arrangements, for example.

Used in 183 profiles

kelvin

SI base unit of thermodynamic temperature, equal in magnitude to the degree Celsius.

Used in 5 profiles