brown point snail vs common arm squid

Acicula fusca compared with Brachioteuthis riisei

Key Differences

• brown point snail is Extinct while common arm squid is Data Deficient.

Taxonomic Classification

Rank	brown point snail	common arm squid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Gastropoda (Gastropoda)	Cephalopoda (Cephalopods)
Order	Architaenioglossa (Architaenioglossa)	Oegopsida (Oegopsida)
Family	Aciculidae	Brachioteuthidae
Genus	Acicula	Brachioteuthis
Species	Acicula fusca	Brachioteuthis riisei

Evolutionary Relationship

brown point snail and common arm squid share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

brown point snail

EX — Extinct

common arm squid

DD — Data Deficient

Physical Characteristics

Attribute	brown point snail	common arm squid
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brown point snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium and Norway.

common arm squid

Habitat

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

Range

Distributed across Chile and Norway.

brown point snail

The Brown Point Snail (Acicula fusca) is a species in the genus Acicula. It is currently classified as Extinct on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

common arm squid

<em>Brachioteuthis riisei</em>, commonly known as the Common Arm Squid, is a cephalopod mollusk in the family Brachioteuthidae. This species is classified as Data Deficient on the IUCN Red List, reflecting significant gaps in knowledge about its population size, ecology, and distribution. Records of this species have been reported from waters off Chile and Norway, suggesting a broad oceanic distribution. Common Arm Squids are typically mesopelagic or bathypelagic organisms, inhabiting the open ocean at considerable depths during the day and often migrating toward shallower waters at night to feed. Like other oceanic squids, they are likely important components of marine food webs, serving as both predators of small fish and invertebrates and as prey for larger marine predators such as cetaceans and seabirds. The Data Deficient listing underscores the need for additional research into the biology, population dynamics, and conservation requirements of this understudied species. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway