''Palaemon varians'', known as the common ditch shrimp, river shrimp or Atlantic ditch shrimp, is a
shrimp
Shrimp are crustaceans (a form of shellfish) with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata of the decapod order, although some crustaceans outside of this order are refer ...
found from the
Baltic Sea and the
British Isles to the western
Mediterranean Sea.
It reaches up to in length and is never found in fully
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
* Marine life
* Marine pollution
Military
* ...
conditions, instead living in
brackish water.
[
]
In the aquarium
Often sold by many aquarium retailers as feeder shrimp, river shrimp or grass shrimp and intended as live food for predatory aquarium life. However due to their high tolerance of varying salinity and temperature levels they can survive in marine, brackish or freshwater conditions in temperatures ranging from 1 °C to 30 °C for prolonged periods of time. They will feed on any leftover fish food, algae or plant life and are generally peaceful by nature when mixed with similar sized aquarium life.
References
Palaemonidae
Crustaceans of the Atlantic Ocean
Crustaceans described in 1814
{{Caridea-stub