Biscuit skate vs common bottlenose dolphin

Raja straeleni compared with Tursiops truncatus

Key Differences

• Biscuit skate is Near Threatened while common bottlenose dolphin is Least Concern.

Taxonomic Classification

Rank	Biscuit skate	common bottlenose dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Rajiformes (Rajiformes)	Cetacea (Whales & Dolphins)
Family	Rajidae	Delphinidae (Oceanic Dolphins)
Genus	Raja	Tursiops (Bottlenose Dolphins)
Species	Raja straeleni	Tursiops truncatus

Evolutionary Relationship

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

Conservation Status

Biscuit skate

NT — Near Threatened

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Biscuit skate

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).

Biscuit skate

The Biscuit skate (Raja straeleni) is a species in the genus Raja. It is currently classified as Near Threatened on the IUCN Red List.

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.