Brownfish vs St. James' shell

Actinopyga echinites compared with Pecten maximus

Key Differences

• Brownfish is Vulnerable while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Brownfish	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Echinodermata (Echinoderms)	Mollusca (Mollusks)
Class	Holothuroidea (Holothuroidea)	Bivalvia (Bivalvia)
Order	Holothuriida (Holothuriida)	Pectinida (Pectinida)
Family	Holothuriidae	Pectinidae
Genus	Actinopyga	Pecten
Species	Actinopyga echinites	Pecten maximus

Evolutionary Relationship

Brownfish and St. James' shell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brownfish

VU — Vulnerable

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Brownfish	St. James' shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brownfish

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

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

St. James' shell

Habitat

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

Range

Widely distributed across Asia (China), Europe (8 countries), and South America (Chile).

Brownfish

The Brownfish (Actinopyga echinites) is a species in the genus Actinopyga. It is currently classified as Vulnerable on the IUCN Red List. Native to Asia, inhabiting ecosystems characteristic of the region.

St. James' shell

St. James' shell (Pecten maximus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.