Freshwater Shrimp

Gammarus pulex

Phylum: Arthropoda
Class: Crustacea
Order: Amphipoda

 

 

shrimp

These little creatures have a curved body. They are a brown- yellow colour.

Habitat

 

Freshwater shrimps prefer flowing water, such as streams, but they are also found in lakes and ponds - usually at the water's edge.

They hide under stones, and between the bases of plant stems.

 

Moving around

 

They swim on their side, by waggling their legs.

 

Feeding

 

They eat: small particles of food from the water. Shrimps are filter feeders, and filter the water for food.

They are eaten by: fish, birds and some insect larvae.

 

Reproduction

 

In the springtime, the females and males are often seen swimming around together - the smaller female being held by the male.

The female carries her eggs held within her body, inside what is known as a brood pouch. Young shrimp later hatch from the eggs - so the female releases live young.

 

Breathing

These shrimps need a lot of oxygen in the water.

The front 3 pairs of legs move constantly, and produce a current of oxygen-rich water over gills.

shrimp

 

Size 11 mm
Fun Fact Animals known as Amphipods (like the shrimp) are flattened from side to side.