Giant Otter vs Grooved Fingernailclam

Pteronura brasiliensis compared with Sphaerium simile

Key Differences

• Giant Otter is Endangered while Grooved Fingernailclam is Least Concern.

Taxonomic Classification

Rank	Giant Otter	Grooved Fingernailclam
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Bivalvia (Bivalvia)
Order	Carnivora (Carnivorans)	Sphaeriida (Sphaeriida)
Family	Mustelidae (Weasels & Otters)	Sphaeriidae
Genus	Pteronura	Sphaerium
Species	Pteronura brasiliensis	Sphaerium simile

Evolutionary Relationship

Giant Otter and Grooved Fingernailclam share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Giant Otter

EN — Endangered

Grooved Fingernailclam

LC — Least Concern

Physical Characteristics

Attribute	Giant Otter	Grooved Fingernailclam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Grooved Fingernailclam

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and United States.