Chilean Hagfish vs Emperor Penguin

Eptatretus polytrema compared with Aptenodytes forsteri

Key Differences

• Chilean Hagfish is Data Deficient while Emperor Penguin is Near Threatened.

Taxonomic Classification

Rank	Chilean Hagfish	Emperor Penguin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Myxini (Myxini)	Aves (Birds)
Order	Myxiniformes (Myxiniformes)	Sphenisciformes (Penguins)
Family	Myxinidae	Spheniscidae (Penguins)
Genus	Eptatretus	Aptenodytes (Great Penguins)
Species	Eptatretus polytrema	Aptenodytes forsteri

Evolutionary Relationship

Chilean Hagfish and Emperor Penguin share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Chilean Hagfish

DD — Data Deficient

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

Physical Characteristics

Attribute	Chilean Hagfish	Emperor Penguin
Diet	—	Carnivore
Average Lifespan	—	20 years
Average Length	—	1.1 m
Average Weight	—	40.0 kg

Habitat & Geographic Range

Chilean Hagfish

Habitat

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

Range

Found in Chile.

Emperor Penguin

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Chilean Hagfish

The Chilean Hagfish (Eptatretus polytrema) is a species in the genus Eptatretus. It is currently classified as Data Deficient on the IUCN Red List. Native to South America, inhabiting ecosystems characteristic of the region.

Emperor Penguin

The world's largest penguin, emperor penguins stand up to 1.2 meters and weigh 45 kg, inhabiting the Antarctic continent in some of the most extreme conditions on Earth. They breed in midwinter darkness at temperatures below -60°C, with males incubating single eggs on their feet under a brood pouch for 65 days while females are at sea. Their huddling behavior — cycling individuals through the warm center of thousands-strong groups — is a masterclass in cooperative survival.