Blackbelly skate vs koala

Breviraja nigriventralis compared with Phascolarctos cinereus

Key Differences

Blackbelly skate is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Blackbelly skate	koala
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Elasmobranchii	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Rajiformes (อันดับปลาโรนัน)	Diprotodontia (Marsupials)
Family	Rajidae	Phascolarctidae (Koalas)
Genus	Breviraja	Phascolarctos (Koalas)
Species	Breviraja nigriventralis	Phascolarctos cinereus

Evolutionary Relationship

Blackbelly skate and koala share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

ดู: Phylum: Chordata

Conservation Status

Blackbelly skate

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Blackbelly skate	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Blackbelly skate

Habitat

Native to South America, inhabiting ecosystems characteristic of the region.

Range

Found in Venezuela.

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.

Blackbelly skate

The Blackbelly skate (Breviraja nigriventralis) is a species in the genus Breviraja. It is currently classified as Least Concern on the IUCN Red List. Native to South America, inhabiting ecosystems characteristic of the region.

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.