Koala vs Surf Redfish

Phascolarctos cinereus compared with Actinopyga mauritiana

Taxonomic Classification

Rank	Koala	Surf Redfish
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Chordata (Chordatiere)	Echinodermata (Stachelhäuter)
Class	Mammalia (Säugetiere)	Holothuroidea (Seegurke)
Order	Diprotodontia (Marsupials)	Holothuriida (Holothuriida)
Family	Phascolarctidae (Koalas)	Holothuriidae
Genus	Phascolarctos (Koalas)	Actinopyga
Species	Phascolarctos cinereus	Actinopyga mauritiana

Evolutionary Relationship

Koala and Surf Redfish share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Surf Redfish

VU — Vulnerable

Physical Characteristics

Attribute	Koala	Surf Redfish
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

Habitat & Geographic 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.

Surf Redfish

Habitat

Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Taiwan. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.