Bosnian Blue vs common arm squid

Agriades dardanus compared with Brachioteuthis riisei

Key Differences

• Bosnian Blue is Near Threatened while common arm squid is Data Deficient.

Taxonomic Classification

Rank	Bosnian Blue	common arm squid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Insecta (Insects)	Cephalopoda (Cephalopods)
Order	Lepidoptera (Butterflies & Moths)	Oegopsida (Oegopsida)
Family	Lycaenidae	Brachioteuthidae
Genus	Agriades	Brachioteuthis
Species	Agriades dardanus	Brachioteuthis riisei

Evolutionary Relationship

Bosnian Blue and common arm squid share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bosnian Blue

NT — Near Threatened

common arm squid

DD — Data Deficient

Physical Characteristics

Attribute	Bosnian Blue	common arm squid
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bosnian Blue

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (6 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

common arm squid

Habitat

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

Range

Distributed across Chile and Norway.

Bosnian Blue

The Bosnian Blue (Agriades dardanus) is a species in the genus Agriades. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

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.