Atlantic Bluefin Tuna vs Bamboo bear

Thunnus thynnus compared with Ailuropoda melanoleuca

Key Differences

• Atlantic Bluefin Tuna is Least Concern while Bamboo bear is Vulnerable.
• Atlantic Bluefin Tuna is carnivore while Bamboo bear is herbivore.
• Atlantic Bluefin Tuna is 2.5x heavier than Bamboo bear.
• Atlantic Bluefin Tuna lives longer (40 years vs 20 years).

Taxonomic Classification

Rank	Atlantic Bluefin Tuna	Bamboo bear
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Actinopterygii (Ray-finned Fish)	Mammalia (哺乳類)
Order	Perciformes (ペルカ目)	Carnivora (ネコ目)
Family	Scombridae (Tunas & Mackerels)	Ursidae (Bears)
Genus	Thunnus (Tunas)	Ailuropoda (Giant Pandas)
Species	Thunnus thynnus	Ailuropoda melanoleuca

Evolutionary Relationship

Atlantic Bluefin Tuna and Bamboo bear share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Atlantic Bluefin Tuna

LC — Least Concern

Trend: Increasing ↑

Bamboo bear

VU — Vulnerable

Population: ~1.9K

Trend: Increasing ↑

Physical Characteristics

Attribute	Atlantic Bluefin Tuna	Bamboo bear
Diet	Carnivore	Herbivore
Average Lifespan	40 years	20 years
Average Length	2.5 m	1.5 m
Average Weight	250.0 kg	100.0 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.

Bamboo bear

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate coniferous forests, and temperate broadleaf and mixed forests, among 7 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

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

Atlantic Bluefin Tuna

大西洋クロマグロ（Thunnus thynnus）は大西洋・地中海に生息する世界最大のマグロ類の一種で、体長3メートル・体重700キログラム以上に達する個体が知られる。IUCNレッドリストでは絶滅危惧（EN）に分類されており、寿司・刺身用として極めて高い市場価値を持ち、1尾が3億円以上で取引された事例もある。体温調節能力と高速遊泳能力（時速70キロ以上）を持つ、硬骨魚類の中でも異例の生理的能力を備えた種である。

Bamboo bear

ジャイアントパンダ（Ailuropoda melanoleuca）は中国中部の山岳竹林に生息し、体重最大125キログラムになるクマ科の動物で、食肉目に分類されながら食事の99%を竹が占める特異な食性を持つ。偽の親指（橈側種子骨）を使って竹の茎を把握し、1日14時間もの採食時間を費やす。2016年にIUCNレッドリストで絶滅危惧から危急（VU）へ改善されており、保護繁殖プログラムと自然保護区の設置が個体数回復に貢献している。