Creatures in Crisis
Photograph of Theodoxus altenai (Theodoxus altenai), recorded as Critically Endangered
Theodoxus altenai (Theodoxus altenai). Image via Wikimedia Commons.

Critically Endangered

Theodoxus altenai

Theodoxus altenai

Theodoxus altenai is a gastropod in the family Neritidae (order Cycloneritida), recorded as Critically Endangered.

Status
Critically Endangered
Scientific name
Theodoxus altenai
Taxonomy
Gastropoda · Cycloneritida · Neritidae · Theodoxus

Appearance

The shell is exceptionally thin, light horny yellowish, translucent and shiny. The Whorls are flat and very rapidly increasing, with a brown quadrangular color pattern. The width of the shell is 9.0-10.0 mm.

The height of the shell is 6.0 - 7.0 mm.

Range and habitat

The type locality is a lake near Döşemealti in Antalya Province, Turkey.

Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.

Diet

Snails move on a single foot and feed with a rasping tongue. Island and spring species rarely recolonise once the site is emptied.

In crisis

Theodoxus altenai is Critically Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.

Sources

Written for this catalog from the English Wikipedia article on Theodoxus altenai, Wikidata item Q7782193. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.

Photograph via Wikimedia Commons. Wikipedia · Wikidata · IUCN Red List.

Same genus

Photograph of Theodoxus baeticus (Theodoxus baeticus), recorded as Critically EndangeredCR

Theodoxus baeticus

Theodoxus baeticus
Photograph of Striped nerite (Theodoxus transversalis), recorded as EndangeredEN

Striped nerite

Theodoxus transversalis
Photograph of Black Nerite (Theodoxus prevostianus), recorded as EndangeredEN

Black Nerite

Theodoxus prevostianus
Photograph of Vaquita (Phocoena sinus), recorded as Critically EndangeredCR

Vaquita

Phocoena sinus

Quick answers

What is Theodoxus altenai?
Theodoxus altenai is a gastropod in the family Neritidae (order Cycloneritida).
What is the conservation status of Theodoxus altenai?
Critically Endangered, as the IUCN category stored on Wikidata for Theodoxus altenai. Confirm the official assessment on iucnredlist.org.
Where does Theodoxus altenai live?
The type locality is a lake near Döşemealti in Antalya Province, Turkey.
Why is Theodoxus altenai in crisis?
It is Critically Endangered on Wikidata. Read the official Red List assessment for the criteria.
Is this the IUCN Red List page for Theodoxus altenai?
No. This is a researched catalog account. The Red List is the assessment.
Is Theodoxus altenai a pet?
An animal on this catalog is in crisis in the wild. Keeping one is usually the wrong question.