At a Japanese market recently I bought the little anchovies they call ikan bilis in Malaysia—only the price sticker on the package said "arigato." And no, that word did not appear on any other price stickers, so it wasn't some sort of thank you (although I understand translating "arigato" as "thank you" is apparently problematic in itself—but that's not the point). Are anchovies also called arigato in Japanese? If not, what are they called?
Arigato = maybe the store or brand name? For me, growing up, little dried fishies were Niboshi. (wiki:http://en.wikipedia.org/wiki/Niboshi) Good for snacks as well as dashi. But there are thousands of varieties of dried and wet and cured little fishies (anchovies and sardines and others), so I have no idea what ikan bilis translates to. Almost surely, not arigato.