Results for “GH”

graze

To feed continuously throughout a given period.

Used in 85 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

hard water

Water containing high concentrations of mineral salts.

Used in 45 profiles

head and lateral line erosion

Severe physical condition relatively common to certain fishes in captivity and also known as hole-in-the-head. Sometimes attributed to protozoan parasites of the genus Hexamita or an autoimmune disorder though these theories remains unconfirmed. Certainly associated with and exacerbated by poor water quality and/or nutrition, however. Initially manifests itself as small lesions, normally on the head of an affected individual, but may also extend along the lateral line and into the unpaired fins. If left unchecked these lesions can develop into larger, whitish pits and the condition may prove fatal. Often abbreviated to HLLE and similar to, but not analagous with, neuromastic pitting. Does not appear to occur in nature.

Used in 35 profiles

head depth

Greatest vertical depth through the head.

Used in 9 profiles

head length

Normally a straight-line measurement taken from the tip of the upper lip to the posterior edge of the operculum.

Used in 68 profiles

horny

Hard and rough in texture.

Used in 35 profiles

hypersaline

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

Used in 11 profiles

intertidal

Of or being the area between high and low tide marks; recurrently covered and exposed by tides.

invasive

Most commonly used in reference to a native or non-native species with the tendency to spread widely that does or is likely to cause environmental, economic and/or ecological harm, though may also be applied to widespread, usually non-native, species that do not exert such adverse effects.

Used in 13 profiles

iridescent

Possessing colours that shimmer and change when viewed in different lights or from different angles.

Used in 93 profiles

juvenile

Not yet fully mature though mostly similar in form to an adult specimen; young.

Used in 400 profiles

keratin

Tough, fibrous, insoluble, structural protein forming certain horny structures such as breeding tubercules in some fishes. The principle constituent of hair, nails, horns, and hooves in higher animals.

kingdom

Taxonomic rank in the hierarchical classification of living organisms and natural objects. Either the highest rank or rank below domain, depending on the system being followed.

Used in 3 profiles

kleptoparasitism

Feeding behaviour in which one organism robs food from another that has previously caught, collected or otherwise prepared it.

labyrinth organ

Highly folded, vascularised, suprabranchial accessory breathing organ formed via extension of the first epibranchial bone and used to respire atmospheric oxygen. Found in all members of the freshwater fish suborder Anabantoidei.

Used in 96 profiles

Llanos

Refers to 'Los Llanos', a wide expanse of tropical grassland located east of the Andes mountains in Venezuela and Colombia. Much of the area undergoes significant seasonal fluctuations in water level due to flooding of the Río Orinoco which flows through it.

Used in 13 profiles

macrophyte

An aquatic plant large enough to be seen with the naked eye.

Used in 27 profiles

micropyle

Tiny opening in an egg through which spermatozoa can enter.

microsatellite

Section of DNA comprising very short nucleotide sequences repeated many times. Highly polymorphic and used as a marker to determine genetic diversity, identify important genetic traits, analyse relationships, etc..