What is the disadvantages of mariculture?
It depends on what form of aquaculture. species such as salmon
and those that are carnivorous and actually require feed derived
from wild fish. The amount of captured fish to raise farmed fish is
massive (something like a ratio of 4:1) this then is a huge issue
for the sustainability of wild fish stocks.
Beyond this many of the farms can be environmentally degrading
affecting local fish with disease, escapment etc. additionally the
seabed can become a wasteland. It should be noted that the extent
of effects are limited by the location and size of farms.