Coelacanth vs koala

Latimeria chalumnae compared with Phascolarctos cinereus

Key Differences

  • Coelacanth is Critically Endangered while koala is Vulnerable.
  • Coelacanth is carnivore while koala is herbivore.
  • Coelacanth is 8.0x heavier than koala.
  • Coelacanth lives longer (100 years vs 15 years).

Taxonomic Classification

Rank Coelacanth koala
Kingdom same Animalia (動物) Animalia (動物)
Phylum same Chordata (脊索動物) Chordata (脊索動物)
Class Coelacanthi (Coelacanthi) Mammalia (哺乳類)
Order Coelacanthiformes (シーラカンス) Diprotodontia (カンガルー目)
Family Latimeriidae Phascolarctidae (Koalas)
Genus Latimeria Phascolarctos (Koalas)
Species Latimeria chalumnae Phascolarctos cinereus

Evolutionary Relationship

Coelacanth and koala share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute Coelacanth koala
Diet Carnivore Herbivore
Average Lifespan 100 years 15 years
Average Length 1.8 m 75 cm
Average Weight 80.0 kg 10.0 kg

Habitat & Geographic Range

Coelacanth

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 8 distinct biome types spanning the Australasia and Afrotropic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Comoros, Indonesia, Mozambique, and South Africa. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Coelacanth

1938年に南アフリカ沖で再発見されるまで6,500万年間絶滅していたと考えられていた生きた化石であるシーラカンスは、2メートル、90kgに達することができます。この種は条鰭類よりも四足動物に近い古代の肉鰭類の系統に属しており、脊椎動物の進化を理解する上で科学的に非常に重要です。インド洋の深い岩礁生息地に生息し、夜行性で体内受精により完全に形成された幼魚を産みます。絶滅危惧IA類(CR)種です。

koala

オーストラリア東部・南東部を代表する有袋類で、体重は最大15kgに達し、低カロリーのユーカリの葉食から得るエネルギーを節約するために1日最大22時間を睡眠に費やす。他の哺乳類の多くを死に至らしめる有毒なユーカリ成分を処理するために高度に特化しており、解毒に特別に適応した腸内微生物叢を持つ。クラミジア感染症、生息地の伐採、気候変動により個体数が激減し、2022年に絶滅危惧種に指定された。

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