Yes, it's fish and a few other minor ingredients(may contain wheat for those who need to watch out for gluten) that are pressed to form a tube shape. It needs to be refrigerated so unless you can find an online source that will ship things in cold pack, you will most likely need to scour the asian markets-in the refrigerated or frozen section. One online grocer that I know of sells other types of fishcakes but not chikuwa. To the best of my knowledge, it's not something that can be made at home.

My kiddo loves it when I stuff it with string cheese(and we've come across one recently that doesn't contain wheat).