Blacktail spurdog vs Collared Myna

Squalus melanurus compared with Acridotheres albocinctus

Key Differences

• Blacktail spurdog is Data Deficient while Collared Myna is Least Concern.

Taxonomic Classification

Rank	Blacktail spurdog	Collared Myna
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Aves (Birds)
Order	Squaliformes (Squaliformes)	Passeriformes (Songbirds)
Family	Squalidae	Sturnidae
Genus	Squalus	Acridotheres
Species	Squalus melanurus	Acridotheres albocinctus

Evolutionary Relationship

Blacktail spurdog and Collared Myna share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Blacktail spurdog

DD — Data Deficient

Collared Myna

LC — Least Concern

Physical Characteristics

Attribute	Blacktail spurdog	Collared Myna
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blacktail spurdog

Collared Myna

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway.

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.

Collared Myna

The Collared Myna, known scientifically as <em>Acridotheres albocinctus</em>, is a passerine bird belonging to the starling family Sturnidae. <em>Acridotheres albocinctus</em> is recognised by its contrasting plumage, which typically features a dark body with a distinct white collar or band — a feature reflected in both its common and scientific names. As a member of the myna genus Acridotheres, this species generally inhabits open woodland, grassland edges, and areas associated with human settlement, where it forages on the ground for invertebrates, fruits, and seeds. It is reported to occur in Norway according to available range data. Detailed biological traits including typical lifespan, body length, and weight are poorly documented for this species in available literature. The Collared Myna is currently assessed as Least Concern on the IUCN Red List, indicating that the global population is considered stable without significant conservation concerns at this time.