Brown cat shark vs Red-billed Duck

Apristurus brunneus compared with Anas erythrorhyncha

Key Differences

• Brown cat shark is Data Deficient while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Brown cat shark	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Carcharhiniformes (Ground Sharks)	Anseriformes (Anseriformes)
Family	Scyliorhinidae	Anatidae
Genus	Apristurus	Anas
Species	Apristurus brunneus	Anas erythrorhyncha

Evolutionary Relationship

Brown cat shark and Red-billed Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown cat shark

DD — Data Deficient

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Brown cat shark	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown cat shark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Found in Chile.

Red-billed Duck

Habitat

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

Range

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

Brown cat shark

The Brown Cat Shark (Apristurus brunneus) is a species in the genus Apristurus. It is currently classified as Data Deficient on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

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.