Results for “ich”

fluke

Any parasitic flatworm which attachs itself to the organs of a fish.

formaldehyde

Colourless, organic gas used as a preservative when dissolved in water, in which form it is often known as formalin.

Used in 1 profile

fractional spawner

A fish species in which females release eggs at intervals over a given period.

Used in 21 profiles

Gammarus

Large genus of amphipod crustacean in the family Gammaridae of which members occur in both fresh and salt water. An important source of food for many fishes.

Used in 2 profiles

ganoid scale

Hard, shiny, enamel-like scale. Found in gars, bichirs and reedfishes, for example.

Gastropoda

Class of molluscs of which the majority of members possess a flattened, muscular foot for locomotion and a head bearing specialised sensory tentacles, with some also having a univalve, coiled shell. Includes all snails, whelks, limpets, conches, and slugs.

general hardness

Measure of the overall concentration of calcium, magnesium and other ions in a water sample with values usually quoted in units of degrees (dGH), of which 1 dGH corresponds to 17.848 ppm. Also referred to as total or permanent hardness.

Used in 59 profiles

genital papilla

Small tube arising from the urogenital opening in some fishes through which male or female gametes are expelled. May only be visible during the reproductive period depending on taxon. Its shape can sometimes used as a feature to identify the gender of an individual.

Used in 114 profiles

genus

Taxonomic group into which a family is divided and which contains one or more species characterised by a shared trait or traits. The generic name is used, either alone or followed by one or two specific epithets, to form a binomen or trinomen.

Used in 1,386 profiles

gill arch

Bony or cartilaginous arch in the pharynx to which the gill filaments and rakers are attached.

Used in 162 profiles

gill chamber

Chambers located on either side of the head into which the gill filaments project.

Used in 2 profiles

gill filament

Comb-like lamellae found in the gills, through which oxygen is extracted and carbon dioxide expelled.

Used in 38 profiles

gill raker

Any of the bony processes located on the gill arch which function to either retain food items or otherwise prevent solid matter from entering the gill chamber. Vary in number and size depending on taxon and therefore useful in identification.

Used in 88 profiles

grow out

To grow fishes to a size at which they are marketable or can be passed on to other aquarists.

Used in 1 profile

gut loading

Process by which live prey is raised and fed nutritious foods prior to use, e.g., feeding crickets on dried fish food or fresh vegetables before being offered to the fish.

Used in 4 profiles

haor

Wetland ecosystem of which most are located in northeast Bangladesh. The typical form is that of a bowl or saucer-shaped depression and the core haor area is surrounded by hills of the Indian states of Meghalaya to the north, Tripura and Mizoram to the south, and Assam and Manipur to the east. The area is known locally as the 'Haor' or 'Sylhet' basin and floods extensively each year during the annual monsoons.

Used in 1 profile

heating cable

Length of flexible cable buried under the substrate in an aquarium and used to maintain constant water temperature. Also popular in planted aquaria due to the associated circulation of water within the substrate which aids in nutrient exchange between plant roots and the surrounding environment.

Hexamita

Genus of parasitic flagellates, some species of which inhabit the intestines of fishes. May cause head and lateral line erosion.

homonym

Two or more names of identical spelling, or differing only in suffix, that have been applied to different members of the same taxonomic rank and of which only one can be valid at any given time.

Used in 2 profiles

hypural bones

Series of bones to which the caudal fin rays are attached.