arrow worm vs Brook Alder

Parasagitta elegans compared with Alnus maritima

Key Differences

• arrow worm is Not Evaluated while Brook Alder is Endangered.

Taxonomic Classification

Rank	arrow worm	Brook Alder
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chaetognatha (arrow worms)	Magnoliophyta (Flowering Plants)
Class	Sagittoidea (Sagittoidea)	Magnoliopsida (Dicots)
Order	Aphragmophora (Aphragmophora)	Fagales (Beeches & Oaks)
Family	Sagittidae	Betulaceae
Genus	Parasagitta	Alnus
Species	Parasagitta elegans	Alnus maritima

Conservation Status

arrow worm

NE — Not Evaluated

Brook Alder

EN — Endangered

Physical Characteristics

Attribute	arrow worm	Brook Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

arrow worm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark and Norway.

Brook Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Belgium, France, Netherlands, and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

arrow worm

The Arrow worm, Parasagitta elegans, is a species. Native to Europe, inhabiting ecosystems characteristic of the region.

Brook Alder

The Brook Alder (Alnus maritima) is a species in the genus Alnus. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.