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.

Used in 74 species profiles

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Related terms

anal-fin
A median, unpaired, ventral fin located between the anus and caudal fin, usually in the posterior portion of the body. Used to maintain equilibrium and stability.
axillary process
A modified, often elongate, scale or group of scales located at the base of the pectoral or ventral fins in some fishes.
paired fins
The pectoral and pelvic/ventral fins, both of which occur in pairs and are analogous to the fore and hind limbs in higher animals.
pelvic 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.
pelvic girdle
Bony or cartilaginous structure supporting the pelvic fins. Sometimes fused with the pectoral girdle.
taxon
A taxonomic group or category of any rank, such as a species, genus family, or class.
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.
vertebrate
An organism possessing a backbone or spinal column.

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