common bottlenose dolphin vs Fivegill Hagfish

Tursiops truncatus compared with Eptatretus profundus

Taxonomic Classification

Rank	common bottlenose dolphin	Fivegill Hagfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Myxini (Myxini)
Order	Cetacea (Whales & Dolphins)	Myxiniformes (Myxiniformes)
Family	Delphinidae (Oceanic Dolphins)	Myxinidae
Genus	Tursiops (Bottlenose Dolphins)	Eptatretus
Species	Tursiops truncatus	Eptatretus profundus

Evolutionary Relationship

common bottlenose dolphin and Fivegill Hagfish share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Fivegill Hagfish

LC — Least Concern

Physical Characteristics

Attribute	common bottlenose dolphin	Fivegill Hagfish
Diet	Carnivore	—
Average Lifespan	45 years	—
Average Length	3.0 m	—
Average Weight	300.0 kg	—

Habitat & Geographic Range

common bottlenose dolphin

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

Fivegill Hagfish

common bottlenose dolphin

The most studied and recognized dolphin species, bottlenose dolphins inhabit warm and temperate oceans worldwide, from coastal shallows to the open sea. Highly intelligent with large brains relative to body size, they demonstrate self-recognition, complex communication, and social learning. They live in fluid fission-fusion societies and cooperate to herd fish. A keystone indicator species for marine ecosystem health.