Bigtooth river stingray vs koala

Potamotrygon henlei compared with Phascolarctos cinereus

Key Differences

• Bigtooth river stingray is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Bigtooth river stingray	koala
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum same	Chordata (حبليات)	Chordata (حبليات)
Class	Elasmobranchii	Mammalia (ثدييات)
Order	Myliobatiformes (لخمة بهشية)	Diprotodontia (ثنائيات الأسنان الأمامية)
Family	Potamotrygonidae	Phascolarctidae (Koalas)
Genus	Potamotrygon	Phascolarctos (Koalas)
Species	Potamotrygon henlei	Phascolarctos cinereus

Evolutionary Relationship

Bigtooth river stingray and koala share a common ancestor at the Phylum level: Chordata. (حبليات)

Conservation Status

Bigtooth river stingray

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bigtooth river stingray	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Bigtooth river stingray

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.

Bigtooth river stingray

The Bigtooth river stingray (Potamotrygon henlei) is a species in the genus Potamotrygon. 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.