Gemeiner Stechrochen vs Blauwal

Potamotrygon motoro compared with Balaenoptera musculus

Key Differences

• Gemeiner Stechrochen is Data Deficient while Blauwal is Vulnerable.

Taxonomic Classification

Rank	Gemeiner Stechrochen	Blauwal
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Elasmobranchii	Mammalia (Säugetiere)
Order	Myliobatiformes (Stechrochenartige)	Cetacea (Whales & Dolphins)
Family	Potamotrygonidae	Balaenopteridae (Rorquals)
Genus	Potamotrygon	Balaenoptera (Rorquals)
Species	Potamotrygon motoro	Balaenoptera musculus

Evolutionary Relationship

Gemeiner Stechrochen and Blauwal share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Gemeiner Stechrochen

DD — Data Deficient

Blauwal

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Gemeiner Stechrochen	Blauwal
Diet	—	Carnivore
Average Lifespan	—	90 years
Average Length	—	30.0 m
Average Weight	—	150.0 t

Habitat & Geographic Range

Gemeiner Stechrochen

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Indomalayan biogeographic realm.

Range

Distributed across Brazil, Colombia, Ecuador, Singapore, and Venezuela.

Blauwal

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 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Gemeiner Stechrochen

The Black river stingray (Potamotrygon motoro) is a species in the genus Potamotrygon. It is currently classified as Data Deficient on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests within the Indomalayan biogeographic realm.

Blauwal

The largest animal ever known to have lived on Earth, blue whales can reach 33 meters and 200 tonnes — their hearts alone weigh as much as a small car. Found in all oceans, they migrate between polar feeding grounds and tropical breeding areas. Filter feeders consuming up to 4 tonnes of krill daily. Endangered, with global populations estimated at 10,000–25,000 after near-extinction from 20th-century whaling.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇪🇨 Ecuador