| Chondrostoma scodrense | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cypriniformes |
| Family: | Cyprinidae |
| Subfamily: | Leuciscinae |
| Genus: | Chondrostoma |
| Species: | †C. scodrense |
| Binomial name | |
| Chondrostoma scodrense Elvira, 1987 | |
| Synonyms | |
Chondrostoma scodrensisElvira, 1987 | |
Chondrostoma scodrense was a ray-finned fish that is classified as extinct by the IUCN Red List of Threatened Species.
The species was described from nine specimens caught 100 years ago. Its habitat in the late 19th century included Lake Skadar and its surroundings in Montenegro and Albania. Since then, in spite of intensive investigations of its only known previous range, in the 1980s, 1990s and 2003, no specimens have been recorded. [1]
In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.
In ecology, a habitat is the type of natural environment in which a particular species of organism lives. It is characterized by both physical and biological features. A species' habitat is those places where it can find food, shelter, protection and mates for reproduction.
Lake Skadar — also called Lake Scutari, Lake Shkodër and Lake Shkodra — lies on the border of Albania and Montenegro, and is the largest lake in Southern Europe. It is named after the city of Shkodër in northern Albania. It is a karst lake.
