ExploreFish

Eastern Mosquitofish

gambusia holbrooki

The Eastern Mosquitofish is a small, lively fish that's great for controlling mosquito populations! They zip around in the water, making them fun to watch as they play and explore their home.

Habitat: Ponds, streams, and marshes across the eastern United States.

Appearance

The Eastern Mosquitofish is a small, slender fish with a flattened head and an upward-pointing mouth. It has a dull greyish-olive back fading to a silvery-white belly, often with a dark 'gravid spot' visible on females. Its small size and distinct male anal fin (gonopodium) differentiate it.

KingdomAnimaliaPhylumChordataClassActinopterygiiOrderCyprinodontiformesFamilyPoeciliidaeGenusGambusia
Eastern Mosquitofish
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Eastern Mosquitofish

Category

Fish

Rarity

Common

Danger

0/5 · No known danger

Snaps

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Interesting facts

Female mosquitofish can store sperm for months, making many batches of babies!

Introduced worldwide to fight mosquitoes, they are now one of the most widespread fish!

These tiny fish can gulp air from the surface when water oxygen is low!

They are super tiny but can be aggressive, nipping the fins of larger fish!

Special abilities

Ability

Mosquito Muncher

Eastern Mosquitofish can devour large numbers of mosquito larvae, which helps them control insect populations in their watery homes.

Ability

Live Birth Giver

Eastern Mosquitofish has the amazing ability to give birth to live, fully formed young, skipping the egg stage for survival.

Ability

Tough Survivor

Eastern Mosquitofish can endure harsh conditions like low oxygen because of its adaptable gill and kidney systems.

Measurements & details

Length
2-6 cm
Weight
0.001-0.005 kg
Lifespan
1-2 years
Swim Speed
8 km/h
Maximum Depth
2 m
Water Type
Freshwater

Diet & Feeding

These tiny fish are expert insect hunters, gobbling up mosquito larvae and other small critters.

Primary Foods

  • mosquito larvae
  • aquatic insect larvae
  • zooplankton
  • small terrestrial insects

Foraging Method

  • Foraging

Ecological connections

eats

Yellow Fever Mosquito

Aedes aegypti

eats their larvae, helping control mosquito populations

eaten by

Largemouth Bass

Micropterus salmoides

a common food source for this larger predatory fish

eaten by

Mallard Duck

Anas platyrhynchos

small size makes them prey for waterfowl

Traits

Also known as

GambusiaMosquito FishTopminnow

Collections

Safety

Danger

0/5 · No known danger

No special safety notes yet.

Frequently Asked Questions

How long is Eastern Mosquitofish?

2-6 cm

How much does Eastern Mosquitofish weigh?

0.001-0.005 kg

How long does Eastern Mosquitofish live?

1-2 years

What does Eastern Mosquitofish eat?

These tiny fish are expert insect hunters, gobbling up mosquito larvae and other small critters.

How fast can Eastern Mosquitofish swim?

8 km/h

Where is Eastern Mosquitofish usually found?

Ponds, streams, and marshes across the eastern United States.

How does Eastern Mosquitofish hunt?

Foraging

How deep can Eastern Mosquitofish go?

2 m

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Where to spot

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