カリフォルニアホタルイカ vs tiny risso snail

Abraliopsis felis compared with Rissoa parva

Taxonomic Classification

Rank	カリフォルニアホタルイカ	tiny risso snail
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Mollusca (軟体動物)	Mollusca (軟体動物)
Class	Cephalopoda (頭足類)	Gastropoda (腹足綱)
Order	Oegopsida (開眼目)	Littorinimorpha (タマキビガイ下目)
Family	Enoploteuthidae	Rissoidae
Genus	Abraliopsis	Rissoa
Species	Abraliopsis felis	Rissoa parva

Evolutionary Relationship

カリフォルニアホタルイカ and tiny risso snail share a common ancestor at the Phylum level: Mollusca. (軟体動物)

Conservation Status

カリフォルニアホタルイカ

LC — Least Concern

tiny risso snail

LC — Least Concern

Physical Characteristics

Attribute	カリフォルニアホタルイカ	tiny risso snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

カリフォルニアホタルイカ

tiny risso snail

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

カリフォルニアホタルイカ

The Clawed Enope Squid, Ancistrocheirus lesueurii, is a medium-sized oceanic squid in the family Ancistrocheiridae found in mesopelagic and bathypelagic zones of the Atlantic, Pacific, and Indian Oceans. It is the sole species in its family, representing a phylogenetically isolated lineage of deep-sea squids. The species is characterized by powerful, hook-bearing tentacles used to capture prey, an adaptation reflected in its common name. The mantle is muscular and elongated, bearing lateral fins, and the arms bear suckers modified into sharp hooks in adults. Ancistrocheirus lesueurii performs diel vertical migrations, ascending toward the surface at night and retreating to deeper waters during daylight hours. It is a voracious predator of fish and other squids, and is in turn preyed upon by sperm whales, large pelagic fishes, and sharks. Bioluminescent photophores are present on the body and arms, likely functioning in counterillumination or signaling. As a mesopelagic species distributed throughout major ocean basins, the Clawed Enope Squid contributes significantly to vertical carbon transport in marine ecosystems, processing organic material from surface waters and redistributing it at depth. Population status is unknown; the species has not been assessed by IUCN. It is occasionally recovered in the stomach contents of top predators and from deep-sea trawl surveys.