The total number and size of larval

The total number and size of larval
tanks required for a hatchery depends on
a number of parameters, including: larval
stocking density; expected survival rates
between each of the five zoeal stages,
the megalopa stage, through the final
metamorphosis to crablet; the number of
batches per year required; the number of
crablets per batch; and the annual target
for production of crablets. For large
hatcheries, a modular approach to hatchery
construction may be considered, where
the design is replicated one or more times.
Having duplicated (or replicated) hatchery
facilities has a number of advantages.