小鬚鯨 vs Irrawaddy dolphin

Balaenoptera acutorostrata compared with Orcaella brevirostris

Key Differences

• 小鬚鯨 is Least Concern while Irrawaddy dolphin is Endangered.

Taxonomic Classification

Rank	小鬚鯨	Irrawaddy dolphin
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order same	Cetacea (Whales & Dolphins)	Cetacea (Whales & Dolphins)
Family	Balaenopteridae (Rorquals)	Delphinidae (Oceanic Dolphins)
Genus	Balaenoptera (Rorquals)	Orcaella
Species	Balaenoptera acutorostrata	Orcaella brevirostris

Evolutionary Relationship

小鬚鯨 and Irrawaddy dolphin share a common ancestor at the Order level: Cetacea. (Whales & Dolphins)

Conservation Status

小鬚鯨

LC — Least Concern

Irrawaddy dolphin

EN — Endangered

Physical Characteristics

Attribute	小鬚鯨	Irrawaddy dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

小鬚鯨

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador).

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

小鬚鯨

袋鲸（Berardius minimus）是一种分布于北太平洋的中等体型喙鲸，是近年来通过基因和形态学研究新认定的物种。该物种保护状态为数据缺乏（DD），其深海栖息习性使得系统性的种群调查极为困难。