Shad
Shad Thames is the only instance of this fish on London’s street signs. Two main theories exist regarding its etymology. The first suggests it evolved from ‘St. John-at-Thames’, referring to the St. John’s Church that once stood near the present-day London City Mission. The second theory proposes that the name comes from the shad fish that were historically abundant in the River Thames.
Shad
Shad are saltwater fish that swim up rovers to spawn. The flesh of these fish is considered very good to eat, though bony; the roe are considered a delicacy in some cultures.
