Results for “sp.”

sp.

Abbreviation for species.

batch spawner

A fish species which deposite eggs on more than a single occasion throughout a particular spawning season rather than within a short period.

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

serial spawner

A fish species spawning in multiple bursts within a given period, typically in response to some environmental stimulus or cue, e.g., rainfall.

speciose

Containing a high number of species. Normally applied to a taxonomic group or specified geographical area.

Used in 177 profiles

species nova

New species, usually given after the species name in a description instead of the author. Abbreviated to sp. nov. or sp. n.

phylogenetic species concept

Species concept based on the evolutionary relationships among organisms, specifically using common ancestry and shared evolutionary history to define species. Under this concept a species is essentially the smallest group of organisms that share a common ancestor and can be distinguished from other such groups via phylogenetic analyses. Each such grouping constitutes a distinct branch on an evolutionary tree. Subspecies tend not to be recognised and it is generally less restrictive than the biological species concept. Often abbreviated to PSC.

Used in 1 profile

spine

See fin spine; also a hard, pointed, protective outgrowth or process elsewhere on the body, e.g., a preopercular spine; the spinal column of a vertebrate.

Used in 414 profiles

synchronous spawning

Spawning behaviour in which all individuals of a species spawn in unison, normally as a result of some environmental trigger or cue.

voucher specimen

Specimen housed in a permanent, usually museum, collection, ideally including detailed collection data such as date, location, etc.. Assigned a specific code in order in case later reference is required. May be a type specimen.

humeral spot

A marking on the body in the area analogous to the humerus, or shoulder. In fishes it's normally located above the pectoral-fin and behind the opercle. There may be more than a single such spot in some species.

Used in 42 profiles

spawning substrate

Particular substrate type required by a given egg-laying fish species for the purpose of spawning.

Used in 9 profiles

species richness

The number of species present in a given sample, habitat, or otherwise specified geographical region.

specific epithet

In zoological nomencature, the second name in a binomen and in a trinomen. Has no nomenclatural function when used alone, though this is often done in aquarium literature or when referring to a species in passing if the genus being referred to is already clearly known. Also known as specific name.

Used in 24 profiles

broadcast spawner

A fish which releases its gametes into open water for external fertilisation, with no subsequent parental care. The strategy is more commonly-seen in marine than freshwater species.

fin-spine

Unsegmented and unbranched, bony structure supporting the fins in teleosts. Usually hard, rigid and pointed and may have a smooth or serrated edge. Not laterally-paired like rays, and in some species modified to form a protective structure.

Used in 15 profiles

fractional spawner

A fish species in which females release eggs at intervals over a given period.

Used in 21 profiles

speciation

Evolutionary formation of new biological species.

Used in 13 profiles

spinelet

A small spine.

Used in 9 profiles

spiniform

Shaped like a spine.