Results for “várzea”

genetics

Branch of biology concerned with the study of heredity and variation of organisms; the genetic constitution of a single organism, species, or other taxonomic group.

Used in 4 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

gestation

Period of embryonic development in a viviparous organism.

Used in 31 profiles

gill

Respiratory organ of fishes and some other aquatic organisms comprising a highly-vascularised membrane or outgrowth.

Used in 314 profiles

gill net

Type of net normally suspended vertically in such a way that fish become ensnared by their gills.

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

gram-negative

Of, relating to, or being a bacterium that does not retain the crystal violet dye used in Gram's method of staining.

gram-positive

Of, relating to, or being a bacterium that does retain the crystal violet dye used in Gram's method of staining.

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

head depth

Greatest vertical depth through the head.

Used in 9 profiles

herbivore

An organism whose diet consists almost exclusively of vegetable matter.

Used in 18 profiles

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

husbandry

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

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

inferior mouth

Mouth located on the ventral surface of the head and oriented downwards.

Used in 7 profiles

invalid

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

Used in 43 profiles

invalid name

In zoological nomenclature, any available name for a taxon other than the valid name.

Used in 12 profiles

iridescent

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

Used in 93 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

keel

Ridgelike structure located on the ventral surface, caudal peduncle or caudal fin base in certain fishes.

Used in 35 profiles