Freshwater Aquarium Invertebrates
Freshwater Aquarium Invertebrates - Cherry Shrimp
Red Cherry shrimp (Neocaridina denticulata
red var.) are freshwater aquarium invertebrates that originally came from freshwater streams
and ponds in Taiwan. The water is fresh and the temperature is usually
between 23 to 30 degrees C . Cherry shrimp stay bright red all the time, but only
if they have sufficient amounts of natural or artificial light.
For example, after shipping, they may appear light gray or black in
color. After being placed in a water grass or other aquatic plant
aquarium with sufficient overhead light, they will return to their
bright red color within an hour. The bright red color of Cherry Shrimp is very
beautiful against the green colors of aquatic plants, and they are great
Cherry shrimp will also
lose some of their coloring during the time when they shed their
shells. The cherry shrimp becomes light pink to whitish pink at that time. Shell
shedding happens around mid August in Taiwan. As
these are a newly discover shrimp (summer 2002), they have not been
observed for a lengthy amount of time.
Red Cherry Shrimp have a tolerance which extends from 15 to 28
degrees Celsius . At more than 30 degrees, they will become sick. The
most appropriate temperature range for them is between 20 to 26 degrees
These shrimp are also very sensitive to metal compounds, particularly
copper. If tanks have been cleaned with disinfectants that contain metal
compounds or copper, cherry shrimp may become sick and die.
So, cherry shrimp should not be exposed to any chemicals used to control ich.
Also, if the nitrate values are more than 25 mg/l (25 ppm), they cannot
Cherry shrimp are most active at night. Turn off the light
and feed them in the evening. Feed them algivorous or thread algae.
Freshwater Aquarium Invertebrates - Florida Blue Crayfish
The Florida Blue Crayfish, Procambarus alleni, grows up to 15 cm in length
and can tolerate temperatures from 10 - 22 degrees Celsius (50 - 70 Fahrenheit)
so it is recommended that the aquarium not be heated. These blue crayfish need
oxygen, so an air stone at the bottom of the aquarium is recommended. The
aquarium should be completely covered. Crayfish will climb out of the tank
and then die of dehydration.
Florida Blue Crayfish do best on shrimp pellets and
live blackworms. Each crayfish needs a secure place within their
aquarium, to feel secure. Crayfish
will seek this secure spot on a regular basis, especially during and right after
Florida Blue Crayfish - Tankmates:
There are very few safe tankmates for Florida Blue Crayfish.
This is because most tankmates either get eaten by the crayfish, or eat
the crayfish. Crayfish are
especially vulnerable when their shells are soft, and when they are weakened,
right after moulting. Cichlids
are noted for eventually dining on crayfish.
Also, many tankmates get ruled out because they require tropical
temperatures. Crayfish generally
need room temperatures.
Fan Shrimp and Malawi Blue Crab