Results for “várzea”

vivarium

Artificial enclosure of variable size used to house plants or animals.

Used in 1 profile

vomer

Thin, anterior, flattened bone dividing the nostrils in most vertebrates. Sometimes bears teeth.

Used in 4 profiles

cleithral spot

Variably-sized (depending on species), usually dark marking present in the cleithral area dorsal to the pectoral fin insertion. Normally visible externally in llive specimens.

Used in 17 profiles

lateral line

Sensory organ comprising a series of neuromasts running along the head and flanks and used to detect movement and vibration in the surrounding water. Also known as the lateralis system and visible as one or more rows of pored scales of varying length in many fishes.

Used in 366 profiles

peat

A compressed accumulation of partially-decomposed, chiefly vegetable matter typically found in certain marshes, bogs, and peat swamp forests throughout the world. It forms via breakdown of various plants and other organic materials in water when full decomposition is prevented due to localised acidic, anaerobic conditions. As a result of this somewhat specific nature the organisms inhabiting peaty environments are often stenotypic and found nowhere else. Peat can be used as a fuel when dried and thus has industrial importance in some countries. Also used in aquaria, especially in order to simulate blackwater habitats, either in pure, artificially-granulated or liquid extract form.

Used in 268 profiles

salt bath

Treatment against various parasites which involves placing a freshwater fish in a solution of saline water with the salt concentration and period of exposure variable depending on the size of the fish and severity of infection. Similar to a salt dip in that parasites are killed via osmotic shock, but of longer duration.

trickle tower

Large filter particularly suitable for outdoor ponds and large aquaria, consisting of a series of vertically-arranged chambers filled with one or more types of media. Water is pumped to the top chamber where it is dispersed, most often using a spray bar. It then percolates down through the other chambers via gravity before being returned to the pond or aquarium.

gang valve

Plastic or metal, adjustable valve used to split a length of air line, and allowing two or more air-driven devices to be operated at once. Also known as an air-control valve.

ball valve

Type of shutoff valve comprising a free-floating ball with a cylindrical-shaped hole in it that sits in a concave-shaped depression over an opening.

venomous

Secreting venom; able to inflict a poisonous bite, sting or wound.

Used in 79 profiles

vertebrae

Plural of vertebra.

Used in 174 profiles

vertical migration

Movement within the vertical plane of a water column.

viviparity

The state or quality of being viviparous.

Used in 13 profiles

viviparous

Giving birth to living offspring that develop within the mother's body, e.g., most mammals, many reptiles, some fishes. There is a direct placental or equivalent connection to the mother, meaning that members of the family Poeciliidae are not strictly viviparous and more correctly referred to as ovoviviparous.

Used in 3 profiles

aplacental viviparity

Also known as ovoviviparity. Method of reproduction employed by certain fishes in which the eggs are fertilised and develop inside the female but there is no placental connection. The juveniles are free-swimming and able to feed as soon as they leave the female's body.

valid name

The correct, currently-accepted scientific name for a taxon.

Used in 4 profiles

variegated

Exhibiting differently coloured markings; diversified.

Used in 10 profiles

vegetative

Of, relating to, or capable of growth, or functioning in processes such as growth or nutrition rather than sexual reproduction.

Used in 28 profiles