Silver-skinned fish like horse mackerel is called "Hikari-mono" in Japan.
Its taste is more rich than that of white fish.
If you want
to eat the fresh one, you should go to the Tsukij fish
market in the evening
because Hikari-mono fishes are brought to the market about those time.
more info:
http://en.wikipedia.org/wiki/Horse_mackerel
(wikipedia)
more info:
http://en.wikipedia.org/wiki/Horse_mackerel
(wikipedia)