Bigeye thresher vs Bog Fritillary

Alopias pelagicus compared with Boloria eunomia

Key Differences

• Bigeye thresher is Endangered while Bog Fritillary is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Bog Fritillary
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Chondrichthyes (Cartilaginous Fish)	Insecta (Insects)
Order	Lamniformes (Mackerel Sharks)	Lepidoptera (Butterflies & Moths)
Family	Alopiidae	Nymphalidae (Brush-footed Butterflies)
Genus	Alopias	Boloria
Species	Alopias pelagicus	Boloria eunomia

Evolutionary Relationship

Bigeye thresher and Bog Fritillary share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

Bog Fritillary

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Bog Fritillary
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.

Bog Fritillary

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (22 countries) and North America (Canada).

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.

Bog Fritillary

Bog Fritillary (Boloria eunomia) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.