Sharpfin houndshark vs Smooth hound

Triakis acutipinna compared with Triakis maculata

Key Differences

• Sharpfin houndshark is Endangered while Smooth hound is Critically Endangered.

Taxonomic Classification

Rank	Sharpfin houndshark	Smooth hound
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Chondrichthyes (Knorpelfische)	Chondrichthyes (Knorpelfische)
Order same	Carcharhiniformes (Grundhaie)	Carcharhiniformes (Grundhaie)
Family same	Triakidae	Triakidae
Genus same	Triakis	Triakis
Species	Triakis acutipinna	Triakis maculata

Evolutionary Relationship

Sharpfin houndshark and Smooth hound share a common ancestor at the Genus level: Triakis.

Conservation Status

Sharpfin houndshark

EN — Endangered

Smooth hound

CR — Critically Endangered

Physical Characteristics

Attribute	Sharpfin houndshark	Smooth hound
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Sharpfin houndshark

Habitat

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

Smooth hound

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

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