(often called mud crab
or mangrove crab
, although both terms are highly ambiguous, as well as black crab
) is an economically important crab species
found in the estuaries
. In their most common form, the shell colour varies from a deep, mottled green to very dark brown. Generally cooked with their shells on, when they moult
their shells, they can be served as a seafood delicacy, one of many types of soft shell crab
. Some consider them to be among the tastiest of crab species and they have a huge demand in South Asian
countries where they are often bought alive in the markets. In the northern states of Australia
and especially Queensland
, mud crabs are relatively common and generally prized above other seafood within the general public.
These crabs are highly cannibalistic
in nature and when another crab undergoes moulting the hard shelled ones attack the moulting crabs and devour them. The females can give birth to 1 million offspring which can grow up to in size and have a shell width of up to wide.
Mud crab can be killed by placing them in a freezer for up to two hours.
There has been a huge interest in the aquaculture of this species due to their high demand/price, high flesh content and rapid growth rates in captivity. In addition they have a high tolerance to both nitrate and ammonia
(particularly NH<sub>3</sub>) (twice that of the similar... Read More