common freshwater shrimp or gammarus pulex






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Gammarus pulex

The common freshwater shrimp lives on the
bottom of a ditch and hunts for food. But others
have an eye on it : Birds and the stickelback
and salamanders.
They all eat this peaceful animal. The common fresh
water shrimp feeds itself with bloodworm,
algae that grow on waterplants , and dead animals
Most of the time they walk on the bottom, sometimes
they swim with an clumsy way of propelling.


gammarus pulex in the aquarium



These animals are easely eaters and clean up
youre aquarium. But they are very sensitiv
for low acidity: If the Ph goes lower then 5.5
they will dissapear. So only healthy fresh water
aquaria keep them happy. You can feed them with
million things but fishfood will do the job.
They themselves are fond of worms and bloodworms.




Gammarus walking the bottom in front of a webcam.






The cover of a book shows the gammarus.
Gammarus pulex is popular with freshwater biologist
and nature writers like Jac P Thijsse and Brehm.




illustrations of A.E. Brehm


Alfred Brehm (1829-1884) is of the writer
"Tierleben " or Brehms "Life of animals".
The illustrations from this book can be found here:

bugs
snails and slugs
Red Squirrel
bumble bees
been weevil
housefly
crab
great pond snail
ground beetles
crested newt
dronefly
scorpionfly
man of war
seastars and bristle stars
porpita porpita and Velella
precious coral

engravings from Brehm:

bumble bee
beanweazle
housefly
crab
pondsnail
tigerbeetle
pondscater
gammarus
Aquatic sowbug
waterspider


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    Gammarus pulex seen under the microscope of Jaap Cost Budde




    The anatomy of Gammarus Pulex.
    The antennule are appendages that play and important role
    in the determination of fresh water shrimps.



    The Gammarus pulex on a gravure by Brehm (1924).




    Gammarus pulex or freshwater shrimp has catched
    a bloodworm, and then pulled it to a save place between
    a waterplant.





    Foto's made by Jaap Cost Budde

    Gammarus
    hydra
    watermite
    waterstick
    backswimmer
    mysis
    chaetogaster limnaei



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