Amazon River Dolphin vs Hohojirozame

Inia geoffrensis compared with Carcharodon carcharias

Key Differences

Amazon River Dolphin is Data Deficient while Hohojirozame is Vulnerable.

Taxonomic Classification

Rank	Amazon River Dolphin	Hohojirozame
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Chondrichthyes (軟骨魚綱)
Order	Cetacea (Whales & Dolphins)	Lamniformes (ネズミザメ目)
Family	Iniidae	Lamnidae (Mackerel Sharks)
Genus	Inia	Carcharodon (Great White Sharks)
Species	Inia geoffrensis	Carcharodon carcharias

Evolutionary Relationship

Amazon River Dolphin and Hohojirozame share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

Amazon River Dolphin

DD — Data Deficient

Hohojirozame

VU — Vulnerable

Population: ~3.5K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Amazon River Dolphin	Hohojirozame
Diet	—	Carnivore
Average Lifespan	—	70 years
Average Length	—	5.0 m
Average Weight	—	1.1 t

Habitat & Geographic Range

Amazon River Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Hohojirozame

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate grasslands and steppes, among 9 distinct biome types spanning the Indomalayan and Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Chile, Norway, Portugal, and Taiwan. Currently classified as Vulnerable 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.

Hohojirozame

地球上で最大の捕食性魚類であるホホジロザメは、全世界の主要な大洋の冷涼な沿岸・外洋域に生息し、体長6メートル、体重2,000キログラムに達することがあります。海洋哺乳類、大型魚類、海鳥を主な獲物として下方からの待ち伏せ攻撃を行う最上位捕食者です。その恐ろしい評判にもかかわらず、人間への非挑発的な攻撃は極めてまれです。フカヒレ採取、混獲、目的的漁獲によって個体数が減少しており、多くの地域で法的保護を受けているにもかかわらず危急（VU）に分類されています。