Final answer:
Anchovies are classified in the family Engraulidae within the order Clupeiformes, which is different from the family Clupeidae that includes herrings and sardines.
Step-by-step explanation:
The family classification of anchovies within the order Clupeiformes is b) Engraulidae. Anchovies are small, common saltwater forage fish in the family Engraulidae that are used as human food and fish bait. This classification is distinct from the family Clupeidae, which includes herrings and sardines, another group of small forage fish. While Clupeiformes is the order encompassing both families, anchovies are specifically classified under Engraulidae.