The Techirghiol stickleback (''Gasterosteus crenobiontus'') was an endemic fish species, found in the streams inflowing to the coastal hyperhaline Lake Techirghiol in southern Romania. It was a

freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...

benthopelagic fish, up to SL in length. It is considered

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

due to

hybridization Hybridization (or hybridisation) may refer to: *Hybridization (biology), the process of combining different varieties of organisms to create a hybrid *Orbital hybridization, in chemistry, the mixing of atomic orbitals into new hybrid orbitals *Nu ...

with the three-spined stickleback following irrigation which allowed the two taxa to mix by diluting the hypersaline water barrier which separated them. The last known occurrence of the species was in the 1960s.Freyhof, J. & Kottelat, M. 2008. Gasterosteus crenobiontus. The IUCN Red List of Threatened Species. Version 2014.2. www.iucnredlist.org. Downloaded on 25 September 2014.

References

External links

''Gasterosteus crenobiontus'' at FishBase
Techirghiol stickleback Endemic fauna of Romania Extinct animals of Europe Fish extinctions since 1500 Techirghiol stickleback {{Gasterosteiformes-stub