Bigeye thresher vs Ciliolate Aster

Alopias pelagicus compared with Symphyotrichum ciliolatum

Key Differences

Bigeye thresher is Endangered while Ciliolate Aster is Not Evaluated.

Taxonomic Classification

Rank	Bigeye thresher	Ciliolate Aster
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Chondrichthyes (Cartilaginous Fish)	Magnoliopsida (Dicots)
Order	Lamniformes (Mackerel Sharks)	Asterales (Daisies & Sunflowers)
Family	Alopiidae	Asteraceae (Daisy Family)
Genus	Alopias	Symphyotrichum
Species	Alopias pelagicus	Symphyotrichum ciliolatum

Conservation Status

Bigeye thresher

EN — Endangered

Ciliolate Aster

NE — Not Evaluated

Physical Characteristics

Attribute	Bigeye thresher	Ciliolate Aster
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigeye thresher

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Distributed across Colombia and Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Ciliolate Aster

Habitat

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

Range

Distributed across Canada, Norway, and United States.

Bigeye thresher

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Ciliolate Aster

Ciliolate aster (Symphyotrichum ciliolatum) is a perennial wildflower in the family Asteraceae, native to central and northern North America, from the Great Plains east through the Great Lakes region and into the northeastern United States and southern Canada. It grows in open woodland, prairie margins, roadsides, and disturbed ground, preferring well-drained to moderately moist soils with full sun. The plant produces upright stems 40–100 centimeters tall bearing alternate, clasping leaves with slightly fringed (ciliolate) margins, and branched clusters of lavender to blue-violet daisy-like flower heads with yellow disc florets. Blooming occurs in late summer and autumn, providing important nectar for migrating monarch butterflies and native bees. Symphyotrichum ciliolatum is classified as Not Evaluated by the IUCN and is common across its native range. The genus Symphyotrichum was split from the broadly defined Aster following molecular phylogenetic work that demonstrated the non-monophyly of the traditional genus. Ciliolate aster is one of many native North American aster species with a wide distribution, though it is absent from Europe despite some database records listing Norway as its country—an artifact of data entry errors in global species databases. Conservation of native prairie and open woodland habitats benefits this species alongside its many pollinators.