Roussette boa vs koala

Scyliorhinus boa compared with Phascolarctos cinereus

Key Differences

• Roussette boa is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Roussette boa	koala
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (mammifères)
Order	Carcharhiniformes (Ground Sharks)	Diprotodontia (Marsupials)
Family	Scyliorhinidae	Phascolarctidae (Koalas)
Genus	Scyliorhinus	Phascolarctos (Koalas)
Species	Scyliorhinus boa	Phascolarctos cinereus

Evolutionary Relationship

Roussette boa and koala share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Roussette boa

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Roussette boa	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Roussette boa

Habitat

Typically found in marine environments from coastal waters to deep ocean.

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.

Roussette boa

The Boa Catshark (Scyliorhinus boa) is a species in the genus Scyliorhinus. It is currently classified as Least Concern on the IUCN Red List.

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.