Arreião vs Arraia-beiço-de-boi

Myliobatis aquila compared with Myliobatis goodei

Key Differences

• Arreião is Not Evaluated while Arraia-beiço-de-boi is Vulnerable.

Taxonomic Classification

Rank	Arreião	Arraia-beiço-de-boi
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Elasmobranchii	Elasmobranchii
Order same	Myliobatiformes (Myliobatiformes)	Myliobatiformes (Myliobatiformes)
Family same	Myliobatidae	Myliobatidae
Genus same	Myliobatis	Myliobatis
Species	Myliobatis aquila	Myliobatis goodei

Evolutionary Relationship

Arreião and Arraia-beiço-de-boi share a common ancestor at the Genus level: Myliobatis.

Conservation Status

Arreião

NE — Not Evaluated

Arraia-beiço-de-boi

VU — Vulnerable

Physical Characteristics

Attribute	Arreião	Arraia-beiço-de-boi
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arreião

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Arraia-beiço-de-boi

Habitat

Native to South America, inhabiting ecosystems characteristic of the region.

Range

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

Arreião

The common bull ray (<em>Myliobatis aquila</em>) is a large elasmobranch found in the coastal and offshore waters of Denmark, Norway, Portugal, and Sweden, typically inhabiting European marine ecosystems. This species typically occurs in shallow coastal seas, estuaries, and sandy bays, where it forages along the seafloor for benthic prey. The common bull ray has not been formally evaluated on the IUCN Red List. As a member of the family Myliobatidae, it is characterized by its diamond-shaped pectoral disc, long whip-like tail, and prominent forehead. The species often feeds on molluscs, crustaceans, and small fish, using its powerful crushing teeth to break open hard-shelled prey. The common bull ray typically moves in small schools or aggregations during certain seasons, and females give birth to live young following internal fertilization. Biological traits of this species remain poorly documented in the scientific literature.