Combining capacity of an atom or ion determined by the number of electrons that it will lose, add, or share when it reacts with other atoms; the bond-forming capacity of a given atom or radical; a numeric value designated to represent this capacity.
Glossary: valence
Glossary: valid name
The correct, currently-accepted scientific name for a taxon.
Glossary: variant
A form or version that differs in some respect from other forms of the same thing or deviates from a standard.
Glossary: variegated
Exhibiting differently coloured markings; diversified.
Glossary: várzea
Type of seasonally-inundated floodplain forest in the Amazon region. The term is normally used for those forests flooded by whitewater rivers but is sometimes used to refer to blackwater environments for which the more traditional term is igapó.
Glossary: vascularised
Containing vessels that carry or circulate fluids, especially blood.
Glossary: vegetative
Of, relating to, or capable of growth, or functioning in processes such as growth or nutrition rather than sexual reproduction.
Glossary: Velvet
See ‘Oodinium‘.
Glossary: venom
Poisonous fluid secreted by various animals, including some fishes.
Glossary: venomous
Secreting venom; able to inflict a poisonous bite, sting or wound.
Glossary: vent
Excretory opening of the digestive tract in fishes.
Glossary: ventral
Of, on, or relating to the underside of an animal or plant; abdominal.
Glossary: ventral disc
A sucking disc formed by the pelvic fins in certain fishes.
Glossary: ventral keel
Fleshy, longitudinal ridge running along the abdomen and caudal peduncle in some fishes.
Glossary: ventral margin
Lower edge or margin.
Glossary: ventral-fin
Either of the pair of fins, also known as pelvic fins, attached to the pelvic girdle in fishes that help control the direction of movement. Correspond to the hind legs in higher vertebrates and vary in position depending on taxon. Sometimes absent entirely.
Glossary: ventral-fin basket
Vernacular nerm used to describe the post-spawning behaviour of cupping or clamping of the ventral fins in order to transport fertilised eggs. Exhibited by females of some Corydoras species, for example.
Glossary: ventrolateral
Positioned or orientated between the ventral and lateral surfaces.
Glossary: ventrum
Relating to or situated on or close to the abdomen or lower surface of an animal’s body; abdominal
Glossary: vermiculate
Having a pattern consisting of irregular, worm-like lines.
Hyphessobrycon agulha
The distribution information on this site does not corespond with the information available on https://www.gbif.org/. On GBIF the distrubution is said...
28th Nov 2019
Channa andrao – Lal Cheng (Channa sp. Assam, Channa sp. lal cheng)
Hi, the images with fry are included here. Just click on one of the photos to make it bigger, then use the arrows to scroll through until you find the...
26th Nov 2019
Synodontis decorus – Clown Synodontis (Synodontis vittatus, Synodontis decora)
Fixed!
26th Nov 2019
Synodontis angelicus – Polka Dot Synodontis (Synodontis angelica)
Fixed, thanks for the heads up!
26th Nov 2019
Synodontis decorus – Clown Synodontis (Synodontis vittatus, Synodontis decora)
Similar to the Angelicus, this scientific name is off. Its Decorus, not Decora.
6th Nov 2019