Which fish live in the open waters of the Arabian Sea?

The open waters of the Arabian Sea support a variety of pelagic fish, which are species that live at or near the surface far from land. These include:1

• Tuna1
• Sardine1
• Billfish (species characterized by a long, sharp bill or snout)1
• Wahoo (a large, swift game fish)1
• Sharks1
• Lancet fish (a large species with daggerlike teeth)1
• Moonfish (a species with a thin, deep-chested, silvery body)1

The presence of these fish is supported by high levels of inorganic nutrients in the western Arabian Sea and off the southeastern coast of the Arabian Peninsula, which are brought to the surface by coastal upwelling. However, the region also experiences periodic mass mortality of fish, often caused by subsurface layers of water that are poor in oxygen being brought to the surface during strong upwelling events.1