''Tetrapleurodon'' is a genus of
lamprey
Lampreys (sometimes inaccurately called lamprey eels) are an ancient extant lineage of jawless fish of the order Petromyzontiformes , placed in the superclass Cyclostomata. The adult lamprey may be characterized by a toothed, funnel-like s ...
s that are
endemic
Endemism is the state of a species being found 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 found elsew ...
to the
Lerma–
Chapala basin in west–central
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
. Both species are
threatened
Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensat ...
.
Species
There are two recognized species in this genus according to
FishBase
FishBase is a global species database of fish species (specifically finfish). It is the largest and most extensively accessed online database on adult finfish on the web. .
They are sometimes included in the genus ''
Lampetra
''Lampetra'' is a genus of lampreys in the subfamily Petromyzontinae.
Species
The currently recognized species in this genus are:
* '' Lampetra aepyptera'' ( C. C. Abbott, 1860) (Least brook lamprey)
* '' Lampetra alavariensis'' Mateus, Alves, ...
'' instead.
[
* '']Tetrapleurodon geminis
''Tetrapleurodon'' is a genus of lampreys that are Endemism, endemic to the Lerma River, Lerma–Lake Chapala, Chapala basin in west–central Mexico. Both species are Threatened species, threatened.
Species
There are two recognized species in t ...
'' Álvarez Álvarez or Álvares may refer to:
People
*Álvarez (surname), Spanish surname
Places
*Alvares (river), a river in northern Spain
* Alvares (ski resort), in Iran
*Alvares, Iran
* Alvares, Portugal
*Álvarez, Santa Fe, a town in the province of Sa ...
, 1964 (Mexican brook lamprey)
* '' Tetrapleurodon spadiceus'' ( T. H. Bean, 1887) (Mexican lamprey)
References
Petromyzontidae
Fish of North America
Jawless fish genera
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