Dwarf round ray vs Red-billed Duck

Urotrygon nana compared with Anas erythrorhyncha

Key Differences

• Dwarf round ray is Near Threatened while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Dwarf round ray	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Aves (Birds)
Order	Myliobatiformes (Myliobatiformes)	Anseriformes (Anseriformes)
Family	Urotrygonidae	Anatidae
Genus	Urotrygon	Anas
Species	Urotrygon nana	Anas erythrorhyncha

Evolutionary Relationship

Dwarf round ray and Red-billed Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Dwarf round ray	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Red-billed Duck

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (6 countries) and South America (Ecuador).

Red-billed Duck

Red-billed Duck (Anas erythrorhyncha) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.