Fly Agaric vs Simons’s Mouse Opossum

Amanita muscaria compared with Marmosa simonsi

Key Differences

• Fly Agaric is Least Concern while Simons’s Mouse Opossum is Not Evaluated.

Taxonomic Classification

Rank	Fly Agaric	Simons’s Mouse Opossum
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (Mammals)
Order	Agaricales (Gilled Mushrooms)	Didelphimorphia (Didelphimorphia)
Family	Agaricaceae (Agarics)	Didelphidae
Genus	Amanita (Amanitas)	Marmosa
Species	Amanita muscaria	Marmosa simonsi

Conservation Status

Fly Agaric

LC — Least Concern

Trend: Stable →

Simons’s Mouse Opossum

NE — Not Evaluated

Physical Characteristics

Attribute	Fly Agaric	Simons’s Mouse Opossum
Diet	Decomposer	—
Average Lifespan	1 years	—
Average Length	20 cm	—
Average Weight	100 g	—

Habitat & Geographic Range

Fly Agaric

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Europe (4 countries), North America (United States), Oceania and the Pacific (New Zealand), and South America (Brazil, Chile, Colombia).

Simons’s Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

Fly Agaric

Among the most iconic and recognizable fungi on Earth, fly agaric mushrooms display striking red caps with white flecked warts across boreal forests of the Northern Hemisphere. Despite their fairy-tale appearance, they contain potent psychoactive compounds including muscimol and ibotenic acid and are moderately toxic. They form critical mycorrhizal symbioses with birch, pine, and spruce trees, exchanging mineral nutrients for carbon and playing essential roles in boreal forest nutrient cycling.