Bigeye Numbfish vs koala

Narcine oculifera compared with Phascolarctos cinereus

Key Differences

• Bigeye Numbfish is Data Deficient while koala is Vulnerable.

Taxonomic Classification

Rank	Bigeye Numbfish	koala
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (mamalia)
Order	Torpediniformes (Pari listrik)	Diprotodontia (Marsupials)
Family	Narcinidae	Phascolarctidae (Koalas)
Genus	Narcine	Phascolarctos (Koalas)
Species	Narcine oculifera	Phascolarctos cinereus

Evolutionary Relationship

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

Conservation Status

Bigeye Numbfish

DD — Data Deficient

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bigeye Numbfish	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Bigeye Numbfish

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.

Bigeye Numbfish

The Bigeye Numbfish (Narcine oculifera) is a species in the genus Narcine.

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.