Long Armed Freshwater Shrimp 5cm

Freshwater Prawn

The Freshwater Prawn is a fascinating native invertebrate species found in rivers, lakes, and creeks across Australia. Known for their hardy nature and intriguing look, these prawns are ideal for aquarists who want something a little different from the usual shrimp or snails. Whether for a native biotope setup, as an algae grazer, or just for their appearance and activity, Macrobrachium australiense makes a great addition to the right aquarium.


Freshwater prawns have semi-translucent bodies that can vary in tone depending on their environment and diet, but they typically display shades of pale green, tan, and light grey. Their long front claws or chelae are a defining feature and are used for foraging and self-defence. Compared to more delicate shrimp species, these prawns are larger and more robust, often growing up to 10–12 cm, and are best suited to tanks where they won’t be harassed by predatory fish.

Breeding this species in captivity is possible but rarely achieved without brackish water for larval development. Females carry large clutches of eggs beneath their tails, and under the right conditions, the larvae can be raised separately in a mix of freshwater and saltwater before being transitioned back into full freshwater. 

Tank Recommendations for your Freshwater Prawn

Due to their larger adult size and active nature, freshwater prawns are best housed in aquariums of at least 40 litres. A soft sand or fine gravel substrate will protect their delicate underbellies and allow them to forage comfortably. Dense planting, rocks, and driftwood will provide hiding spaces, especially during moulting. These prawns are escape artists, so ensure the tank is well-lidded with no gaps.

Suitable Tank Buddies

Freshwater prawns are generally peaceful and can be kept with a wide range of fish that won’t try to eat or bully them. They may nip at slow or small fish if underfed or crowded, but this behaviour is uncommon with a proper diet and environment.

Usually Compatible

Peaceful tetras, rainbowfish, gudgeons, bristlenose plecos, and hardy native species like Murray River rainbows.

Sometimes Compatible

Dwarf cichlids or gouramis may show interest in the prawns, especially during moulting.

Rarely Compatible

Predatory or large cichlids (Oscars, Jack Dempseys), loaches, or anything that may pick at inverts. Avoid keeping them with small ornamental shrimp like cherry or crystal shrimp.

Feeding your Freshwater Prawn

Feeding skittle shrimp is extremely easy, as they only require small amounts of food and accept a wide range of food as well. Generally, a small sinking pellet or algae tablet is a great food option. Along with this, they can be supplemented with blanched veggies such as pumpkin and zucchini.