Pharaoh ant vs Red Imported Fire Ant
How does the Pharaoh ant compare to the Red Imported Fire Ant? They are both members of the Formicidae family. Below we put their classification, habitat, diet, size, and conservation status side by side — and settle who would win in a fight.


Side-by-side comparison
- Scientific name
- Monomorium pharaonis
- Solenopsis invicta
- Classification
- Invertebrate
- Invertebrate
- Family
- Formicidae
- Formicidae
- Habitat
- Human dwellings and heated buildings
- Grasslands, open fields, urban areas
- Diet
- Omnivore
- Omnivore
- Conservation status
- Least Concern
- Least Concern
- Lifespan
- 4-12 months (workers), up to 12 months (queens)
- 1-6 years (queens), several weeks to months (workers)
- Weight
- 0.5–2 mg
- 0.5–5 mg
Pharaoh ant vs Red Imported Fire Ant: who would win?

Pharaoh ant
0.5–2 mg

Red Imported Fire Ant
0.5–5 mg
Red Imported Fire Ant wins moderate confidence
Red Imported Fire Ant is substantially heavier (0.5–5 mg vs 0.5–2 mg). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
Similarities
- Both are invertebrates.
- Both belong to the Formicidae family.
- Both have a omnivore diet.
- Both are listed as Least Concern.
Differences
- Habitat: Human dwellings and heated buildings vs Grasslands, open fields, urban areas.
- Weight: 0.5–2 mg vs 0.5–5 mg.
Pharaoh ant vs Red Imported Fire Ant: FAQ
Who would win in a fight, a Pharaoh ant or a Red Imported Fire Ant?
Red Imported Fire Ant wins. Red Imported Fire Ant is substantially heavier (0.5–5 mg vs 0.5–2 mg). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
What is the difference between a Pharaoh ant and a Red Imported Fire Ant?
Pharaoh ant and Red Imported Fire Ant differ in several ways — habitat: human dwellings and heated buildings vs grasslands, open fields, urban areas. weight: 0.5–2 mg vs 0.5–5 mg.
Do Pharaoh ant and Red Imported Fire Ant live in the same habitat?
No — Pharaoh ant lives in human dwellings and heated buildings, while Red Imported Fire Ant is found in grasslands, open fields, urban areas.
What do Pharaoh ant and Red Imported Fire Ant eat?
Both Pharaoh ant and Red Imported Fire Ant have a omnivore diet.
Which is more endangered, the Pharaoh ant or the Red Imported Fire Ant?
Pharaoh ant is listed as Least Concern, while Red Imported Fire Ant is listed as Least Concern.
How big are Pharaoh ant and Red Imported Fire Ant?
Pharaoh ant weighs around 0.5–2 mg, while Red Imported Fire Ant weighs around 0.5–5 mg.

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Pharaoh ant

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Red Imported Fire Ant







