''Xenurolebias'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
fish
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...
in the
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
Rivulidae
The Rivulidae are a family (biology), family of killifishes in the order (biology), order Cyprinodontiformes. They are commonly known as rivulids, South American killifish or New World killifish. The latter names are slightly misleading, however, ...
. These annual
killifish
A killifish is any of various oviparous (egg-laying) cyprinodontiform fish, including families Aplocheilidae, Pantanodontidae, Cyprinodontidae, Fundulidae, Nothobranchiidae, Profundulidae, Aphaniidae and Valenciidae. All together, there ar ...
are
endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
to temporary pools in the
Atlantic forest near the coast in southeast
Bahia
Bahia () is one of the 26 Federative units of Brazil, states of Brazil, located in the Northeast Region, Brazil, Northeast Region of the country. It is the fourth-largest Brazilian state by population (after São Paulo (state), São Paulo, Mina ...
and
Espírito Santo
Espírito Santo (; ) is a state in southeastern Brazil. Its capital is Vitória, and its largest city is Serra. With an extensive coastline, the state hosts some of the country's main ports, and its beaches are significant tourist attracti ...
, Brazil.
[Costa, W.J.E.M. & Amorim, P.F. (2014): Integrative taxonomy and conservation of seasonal killifishes, Xenurolebias (Teleostei: Rivulidae), and the Brazilian Atlantic Forest. ''Systematics and Biodiversity, 12 (3): 350-365''.]
They are small fish, up to in
total length
Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology.
Overall length
Standard length (SL) is the length of a fish measured f ...
.
As typical of killifish, males are more colorful than females.
[
]
Species
''Xenurolebias'' was formerly regarded as a subgenus of ''Simpsonichthys
''Simpsonichthys'' is a genus of killifish from the Family (biology), family Rivulidae the species of which are Endemism, endemic to temporary freshwater habitats like ponds in the upper Paraná River, Paraná, upper Araguaia River, Araguaia, upp ...
''.[
* '' Xenurolebias cricarensis'' W. J. E. M. Costa, 2014
* '' Xenurolebias izecksohni'' da Cruz, 1983
* '' Xenurolebias myersi'' A. L. de Carvalho, 1971
* '' Xenurolebias pataxo'' W. J. E. M. Costa, 2014
]
References
Rivulidae
Freshwater fish genera
{{Rivulidae-stub