Ichthyological terms, not general ones.
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 431 profiles
The evolutionary development and history of a species or other taxonomic group. May be based on morphology, molecular data, or both.
Used in 52 profiles
Taxonomic rank below kingdom and above class.
In cladistics, a character or trait shared by two or more taxonomic groups but derived from a remote or much earlier common ancestral form and therefore cannot be used to define a clade. Also known as an ancestral state and generally appears at the base level of a cladogram.
Used in 2 profiles
Group of individuals of a given taxon occupying a particular geographic area or specified habitat.
Used in 487 profiles
Genealogical line or lineage. Sometimes used as an infrasubspecific category, i.e., below the subspecies level, to refer to populations or individuals which are not given taxonomic names.
Used in 1 profile
Deliberate release of an organism or group of organisms into an area or habitat previously inhabited by the taxon but from where it has been lost. Primarily carried out for conservation purposes using specimens taken from captivity or relocated from a different area.
Used in 5 profiles
In zoological nomernclature, any name, available, unavailable, or vernacular, for a taxon other than its valid name. Also referred to using the Latin term nomen rejiciendum (nom. rej.).
An organism or group of organisms that exists as a remnant, typically belonging to a formerly abundant group in an environment much changed from that in which it originated; a surviving species from an otherwise extinct taxon.
Used in 5 profiles
Blotch-like marking extending over the dorsal surface in certain fishes. Highly variable in number and form depending on taxon, and often used as an identifying feature.
Used in 49 profiles
Count of a given range of scales. Used in taxonomical studies to differentiate and identify taxa.
Used in 11 profiles
Latin term meaning "in the wide sense". Used in conjunction with a taxonomic name to indicate that the name is used more inclusively than sanctioned by current practice
Used in 12 profiles
Containing a high number of species. Normally applied to a taxonomic group or specified geographical area.
Used in 177 profiles
Any of two or more taxonomic names whose synonymy is a matter of individual opinion, i.e., they are based on multiple name-bearing types.
Used in 6 profiles
Taxonomic rank below species, written in the form of a trinomen. Often applied to a geographically-separated population within a species that retains the capability to produce fertile offspring with other populations but may exhibit phenotypic differences.
Used in 78 profiles
In cladistics, a character or trait shared by two or more taxonomic groups and derived from a remote or much earlier common ancestral form.
In cladistics, a character or trait shared by two or more taxonomic groups and derived from a common ancestral form, whose ancestor in turn did not possess that trait.
Used in 42 profiles
Brief outline or description of a taxon.
Used in 1 profile
Branch of biology concerned with classification and nomenclature of organisms, and the relationships between them; taxonomy.
Used in 41 profiles
In taxonomy, a scientific name derived from a place, region, or other locality.