Earth | Nature | Ocean on Instagram: "Narrow-barred Spanish Mackerel (Scomberomorus commerson) is a highly important and well-known fish across the Indo-Pacific. It is often simply referred to as Spaniard or Kingfish in some regions (like Australia) or King Seer (in the Indian Ocean). Here are the key facts about this large, fast-swimming predator: Coloration: The back and flanks are typically vivid blue to dark grey, fading to a silvery blue grey on the belly. The Bars: Their defining feature i