brown antechinus vs Ojiro-ei

Antechinus stuartii compared with Urogymnus granulatus

Key Differences

• brown antechinus is Least Concern while Ojiro-ei is Vulnerable.

Taxonomic Classification

Rank	brown antechinus	Ojiro-ei
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Elasmobranchii
Order	Dasyuromorphia (フクロネコ目)	Myliobatiformes (トビエイ目)
Family	Dasyuridae	Dasyatidae
Genus	Antechinus	Urogymnus
Species	Antechinus stuartii	Urogymnus granulatus

Evolutionary Relationship

brown antechinus and Ojiro-ei share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

brown antechinus

LC — Least Concern

Ojiro-ei

VU — Vulnerable

Physical Characteristics

Attribute	brown antechinus	Ojiro-ei
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brown antechinus

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Ojiro-ei

brown antechinus

The Brown Antechinus (Antechinus stuartii) is a species in the genus Antechinus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Ojiro-ei

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.