Broadgill Catshark vs Rootless Duckweed

Apristurus riveri compared with Wolffia arrhiza

Key Differences

• Broadgill Catshark is Least Concern while Rootless Duckweed is Endangered.

Taxonomic Classification

Rank	Broadgill Catshark	Rootless Duckweed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Chondrichthyes (Cartilaginous Fish)	Liliopsida (Monocots)
Order	Carcharhiniformes (Ground Sharks)	Alismatales (Alismatales)
Family	Scyliorhinidae	Araceae
Genus	Apristurus	Wolffia
Species	Apristurus riveri	Wolffia arrhiza

Conservation Status

Broadgill Catshark

LC — Least Concern

Rootless Duckweed

EN — Endangered

Physical Characteristics

Attribute	Broadgill Catshark	Rootless Duckweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Broadgill Catshark

Habitat

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

Range

Found in Venezuela.

Rootless Duckweed

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 4 distinct biome types spanning the Indomalayan and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan), Europe (10 countries), North America (Canada), and South America (Brazil). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Broadgill Catshark

The Broadgill Catshark (Apristurus riveri) is a species in the genus Apristurus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.