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

Critically Endangered

Characidium grajahuense

Characidium grajahuense

Characidium grajahuense is a fish in the family Crenuchidae.

Status
Critically Endangered
Scientific name
Characidium grajahuense
Taxonomy
Characiformes · Crenuchidae · Characidium

The ray-finned fish

Characiform fishes are Neotropical and African freshwater lineages: tetras, hatchetfishes, and their relatives.

Range and habitat

It is native to South America and is found in the coastal streams between Guanabara Bay and the Mangaratiba, in Rio de Janeiro, Brazil.

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

Habits

Characiforms school or hold small territories in Neotropical rivers. Many named tetras are known from one drainage that can be silted or dammed.

In crisis

Characidium grajahuense 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 Characidium grajahuense — often a short stub, Wikidata item Q116178330. 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.

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Javan rhinoceros

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Photograph of Sumatran orangutan (Pongo abelii), recorded as Critically EndangeredCR

Sumatran orangutan

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Photograph of Axolotl (Ambystoma mexicanum), recorded as Critically EndangeredCR

Axolotl

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Quick answers

What is Characidium grajahuense?
Characidium grajahuense is a ray-finned fish in the family Crenuchidae (order Characiformes).
What is the conservation status of Characidium grajahuense?
Critically Endangered, as the IUCN category stored on Wikidata for Characidium grajahuense. Confirm the official assessment on iucnredlist.org.
Where does Characidium grajahuense live?
It is native to South America and is found in the coastal streams between Guanabara Bay and the Mangaratiba, in Rio de Janeiro, Brazil.
Why is Characidium grajahuense 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 Characidium grajahuense?
No. This is a researched catalog account. The Red List is the assessment.
Is Characidium grajahuense a pet?
An animal on this catalog is in crisis in the wild. Keeping one is usually the wrong question.