Coachwhip ray vs Equatorial Saki

Urogymnus granulatus compared with Pithecia aequatorialis

Key Differences

• Coachwhip ray is Vulnerable while Equatorial Saki is Least Concern.

Taxonomic Classification

Rank	Coachwhip ray	Equatorial Saki
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Primates (Primates)
Family	Dasyatidae	Pitheciidae
Genus	Urogymnus	Pithecia
Species	Urogymnus granulatus	Pithecia aequatorialis

Evolutionary Relationship

Coachwhip ray and Equatorial Saki share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Coachwhip ray

VU — Vulnerable

Equatorial Saki

LC — Least Concern

Physical Characteristics

Attribute	Coachwhip ray	Equatorial Saki
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coachwhip ray

Equatorial Saki

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

Coachwhip ray

The coachwhip ray, Urogymnus granulatus, is a large elasmobranch in the family Urogymidae found across the Indo-Pacific region, ranging from the Red Sea and East Africa through South and Southeast Asia to northern Australia and the western Pacific islands. It inhabits shallow coastal waters including coral reef flats, sandy lagoons, seagrass beds, and estuarine habitats, where it forages for benthic invertebrates and small fishes buried in the substrate. The coachwhip ray is characterized by an oval disc and a long, whip-like tail with one or more venomous spines at its base, giving the species its common name. The disc reaches up to 1.4 meters in width, making it one of the larger members of its family. Urogymnus granulatus is ovoviviparous, giving birth to live young after internal development, and has low reproductive rates that make populations slow to recover from exploitation. The species is classified as Vulnerable by the IUCN due to significant declines caused by intensive coastal fisheries across its range, particularly in South and Southeast Asia where it is commonly caught as bycatch or targeted for its valuable meat, skin, and gill plates in local markets. Habitat degradation from coastal development and coral reef decline compounds the threat to wild populations.