Brown stingray vs Koala

Hemitrygon fluviorum compared with Phascolarctos cinereus

Key Differences

• Brown stingray is Near Threatened while Koala is Vulnerable.

Taxonomic Classification

Rank	Brown stingray	Koala
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Elasmobranchii	Mammalia (Säugetiere)
Order	Myliobatiformes (Stechrochenartige)	Diprotodontia (Marsupials)
Family	Dasyatidae	Phascolarctidae (Koalas)
Genus	Hemitrygon	Phascolarctos (Koalas)
Species	Hemitrygon fluviorum	Phascolarctos cinereus

Evolutionary Relationship

Brown stingray and Koala share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Brown stingray

NT — Near Threatened

Koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Brown stingray	Koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Brown 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.

Brown stingray

The Brown Stingray (Hemitrygon fluviorum) is a species in the genus Hemitrygon. It is currently classified as Near Threatened on the IUCN Red List. As a member of the genus Hemitrygon, it shares characteristics with related species within this taxonomic group.

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.