Blacktail spurdog vs Caribbean Nurse Frog

Squalus melanurus compared with Allobates caribe

Key Differences

• Blacktail spurdog is Data Deficient while Caribbean Nurse Frog is Critically Endangered.

Taxonomic Classification

Rank	Blacktail spurdog	Caribbean Nurse Frog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Amphibia (Amphibians)
Order	Squaliformes (Squaliformes)	Anura (Frogs & Toads)
Family	Squalidae	Aromobatidae
Genus	Squalus	Allobates
Species	Squalus melanurus	Allobates caribe

Evolutionary Relationship

Blacktail spurdog and Caribbean Nurse Frog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Blacktail spurdog

DD — Data Deficient

Caribbean Nurse Frog

CR — Critically Endangered

Physical Characteristics

Attribute	Blacktail spurdog	Caribbean Nurse Frog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blacktail spurdog

Caribbean Nurse Frog

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 6 distinct biome types within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Venezuela. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Blacktail spurdog

The Blacktail spurdog (Squalus melanurus) is a species in the genus Squalus. It is currently classified as Data Deficient on the IUCN Red List.

Caribbean Nurse Frog

The Caribbean Nurse Frog (Allobates caribe) is a species in the genus Allobates. It is currently classified as Critically Endangered (CR) on the IUCN Red List. 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 6 distinct biome types within the Ne