Angelin vs coastal arrow worm

Andira inermis compared with Parasagitta setosa

Key Differences

Angelin is Least Concern while coastal arrow worm is Not Evaluated.

Taxonomic Classification

Rank	Angelin	coastal arrow worm
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chaetognatha (arrow worms)
Class	Magnoliopsida (Dicots)	Sagittoidea (Sagittoidea)
Order	Fabales (Legumes & Allies)	Aphragmophora (Aphragmophora)
Family	Fabaceae	Sagittidae
Genus	Andira	Parasagitta
Species	Andira inermis	Parasagitta setosa

Conservation Status

Angelin

LC — Least Concern

coastal arrow worm

NE — Not Evaluated

Physical Characteristics

Attribute	Angelin	coastal arrow worm
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Angelin

Habitat

Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands, among 4 distinct biome types spanning the Afrotropic and Palearctic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Chad, Guinea), Asia (India, Singapore), North America (Cuba), and South America (Brazil, Colombia).

coastal arrow worm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Russia.

Angelin

The Angelin (Andira inermis) is a species in the genus Andira. It is currently classified as Least Concern on the IUCN Red List. Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands, among 4 distinct biome types spanning the Afrotropic and Palearctic and Indom.

coastal arrow worm

Parasagitta setosa, the coastal arrow worm, is a chaetognath in the family Sagittidae inhabiting the coastal and neritic waters of the northeastern Atlantic Ocean and adjacent North Sea and Baltic Sea, with confirmed records from Denmark, Norway, and Russia. Arrow worms are small, transparent, torpedo-shaped marine invertebrates typically 1–5 centimeters long, and despite their common name, are neither worms nor closely related to any familiar animal group; they form their own phylum, Chaetognatha, comprising around 120 species. Parasagitta setosa is a predatory planktonic species, using stiff bristle-like grasping spines flanking its mouth to seize copepods, small fish larvae, and other zooplankton that form the bulk of its diet. It occupies neritic plankton communities, often occurring in brackish coastal waters and estuaries where many arrow worm species cannot tolerate reduced salinity. The species serves as an important prey item for fish including herring and sprat and functions as a significant link in coastal marine food webs. Arrow worm phylogenetic position has been debated extensively; molecular evidence places them near the base of protostome animals. The species is Not Evaluated by the IUCN, as marine zooplankton populations are rarely assessed due to monitoring challenges.