Results for “gular”

gular

Of, relating to, or located on the throat.

Used in 11 profiles

jugular

Of or relating to the neck or throat. Sometimes used in reference to a fish possessing pelvic fins located in front of the pectoral fins.

anastomosis

The connection of separate parts of a branching system to form a network. Sometimes used to describe the process by which a relatively regular, e.g. striped, patterning in juveniles of certain fishes breaks up as they mature.

Used in 6 profiles

anguloarticular

A compound bone formed by the fusion of the dermal angular and the cartilaginous articular and comprising the posterior part of the lower jaw.

Used in 5 profiles

biofilm

Aggregate of microorganisms adhering to one another and forming a complex, carpeting structure on living or non-living solid surfaces. Often associated with surfaces that are submerged or regularly in contact with water.

Used in 146 profiles

moniliform

Jointed or constricted at regular intervals so as to resemble a string of beads.

Used in 1 profile

mono-

Prefix meaning singular or unique.

Used in 9 profiles

nitrate reactor

Piece of aquarium equipment that can be thought of as an anaerobic filter. Provides a means by which large enough populations of anaerobic bacteria can be maintained so that nitrates are actively removed from the water in the form of nitrogen gas, a process normally facilitated by regular partial water changes. Also known as a nitrogen filter.

nitrates

Any salt or ester of nitric acid, and the end product of the portion of the nitrogen cycle taking place in most closed aquarium systems (the conversion of nitrates to nitrogen gas in natural systems is carried out by anaerobic microorganisms not normally present in sufficient numbers in aquaria, though this process can be induced by installation of a nitrate reactor). While nitrates are less toxic than ammonia or nitrites, they are still potentially harmful to fishes and other aquatic organisms if allowed to accumulate unchecked, and must therefore be diluted via regular water changes. Aquatic plants also help since they are able to metabolise nitrates to an extent.

Used in 20 profiles

pseudotympanum

Translucent, triangular area in the humeral region, behind the opercle, without muscle and where the anterior part of the gas bladder is in direct contact with the skin. It is hypothesised to function as a hearing aid in many juvenile characoids and is present in adults of certain species, notably members of the family Cheirodontidae.

Used in 2 profiles

rivulated

Having irregular streaks.

trace element

Any chemical element required in small proportions by a given organism in order for certain physiological and biochemical processes to function properly. Often added to marine aquaria using proprietary liquid products and require regular replenishment as they are used up.

vermiculate

Having a pattern consisting of irregular, worm-like lines.

Used in 2 profiles