Irrawaddy dolphin vs Triangle-marked Roller

Orcaella brevirostris compared with Ancylis achatana

Key Differences

• Irrawaddy dolphin is Endangered while Triangle-marked Roller is Vulnerable.

Taxonomic Classification

Rank	Irrawaddy dolphin	Triangle-marked Roller
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Cetacea (Whales & Dolphins)	Lepidoptera (Butterflies & Moths)
Family	Delphinidae (Oceanic Dolphins)	Tortricidae
Genus	Orcaella	Ancylis
Species	Orcaella brevirostris	Ancylis achatana

Evolutionary Relationship

Irrawaddy dolphin and Triangle-marked Roller share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Triangle-marked Roller

VU — Vulnerable

Physical Characteristics

Attribute	Irrawaddy dolphin	Triangle-marked Roller
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Triangle-marked Roller

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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