A variance from the local health authority is required when displaying live
molluscan shellfish in a tank.
A variance is defined as a type of document issued by the appropriate
authorities which gives room for some regulatory requirement to be
waived.
In this scenario, the variance would have to be collected in order to allow
storage of molluscan shellfish in a tank under temperatures of 50°F (10°C) or less within a minimum time frame of 90 days as long as there is no
health hazard.
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