Atlantic Bluefin Tuna vs koala

Thunnus thynnus compared with Phascolarctos cinereus

Key Differences

• Atlantic Bluefin Tuna is Least Concern while koala is Vulnerable.
• Atlantic Bluefin Tuna is carnivore while koala is herbivore.
• Atlantic Bluefin Tuna is 25.0x heavier than koala.
• Atlantic Bluefin Tuna lives longer (40 years vs 15 years).

Taxonomic Classification

Rank	Atlantic Bluefin Tuna	koala
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	Actinopterygii (Ray-finned Fish)	Mammalia (哺乳動物)
Order	Perciformes (鲈形目)	Diprotodontia (雙門齒目)
Family	Scombridae (Tunas & Mackerels)	Phascolarctidae (Koalas)
Genus	Thunnus (Tunas)	Phascolarctos (Koalas)
Species	Thunnus thynnus	Phascolarctos cinereus

Evolutionary Relationship

Atlantic Bluefin Tuna and koala share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Atlantic Bluefin Tuna

LC — Least Concern

Trend: Increasing ↑

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Atlantic Bluefin Tuna	koala
Diet	Carnivore	Herbivore
Average Lifespan	40 years	15 years
Average Length	2.5 m	75 cm
Average Weight	250.0 kg	10.0 kg

Habitat & Geographic Range

Atlantic Bluefin Tuna

Habitat

Found across multiple habitat types including temperate coniferous forests, montane grasslands and shrublands, and Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Distributed across Italy, Japan, Morocco, Spain, and United States.

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Atlantic Bluefin Tuna

大西洋蓝鳍金枪鱼（Thunnus thynnus）是世界上体型最大、游速最快、经济价值最高的鱼类之一，最大个体体重可超过600千克。该物种保护状态为濒危（EN），由于过度捕捞，其野生种群数量急剧下降，单条优质个体在日本拍卖市场上的成交价曾超过300万美元。

koala

澳大利亚东部和东南部的标志性有袋类动物，体重最大可达15千克，为了节省低热量桉树叶食物所提供的能量，每天最多睡眠22小时。高度特化，能够处理会致大多数其他哺乳动物死亡的有毒桉树成分，拥有专门适应解毒功能的肠道微生物群。因衣原体病、栖息地开发和气候变化导致种群锐减，2022年被列为濒危物种。