Amazon River Dolphin vs Green Silver-Spangled Shark

Inia geoffrensis compared with Cucullia argentea

Key Differences

• Amazon River Dolphin is Data Deficient while Green Silver-Spangled Shark is Critically Endangered.

Taxonomic Classification

Rank	Amazon River Dolphin	Green Silver-Spangled Shark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Cetacea (Whales & Dolphins)	Lepidoptera (Butterflies & Moths)
Family	Iniidae	Noctuidae
Genus	Inia	Cucullia
Species	Inia geoffrensis	Cucullia argentea

Evolutionary Relationship

Amazon River Dolphin and Green Silver-Spangled Shark share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Amazon River Dolphin

DD — Data Deficient

Green Silver-Spangled Shark

CR — Critically Endangered

Physical Characteristics

Attribute	Amazon River Dolphin	Green Silver-Spangled Shark
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazon River Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Green Silver-Spangled Shark

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Denmark, Norway, Sweden, and Ukraine. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Amazon River Dolphin

The Amazon River Dolphin (Inia geoffrensis) is a species in the genus Inia. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Typically found in diverse terrestrial and aquatic ecosystems.