How many species of King Crab exist in Alaska?

Although there are approximately 40 species of king crab, in Alaska, there are only three commercially harvested species. These include the blue king crab, the red king crab, and the golden king crab. The scarlet king crab is also found in Alaska. However, based on its low abundance and comparatively-small size, this species is not commercially fished. You can learn more Alaska King Crab quick facts here.