Astove Island is known for its large Giant Trevally population and the topography of the coral that surrounds the island makes it ideal for large predators with shallow coral flats inhabited by small fish, surrounded by steep and deep drop-offs including the famous 'Wall' where you literally go from ankle deep water to a steep almost vertical drop-off down to 3000ft.
It is the perfect habitat for large predators to ambush small prey. This also makes for a perfect location for anglers seeking the thrills of targeting large predators such as GT's, Bluefin Trevally, Barracudas etc. In addition, there is a good population of Bonefish and other species to target from Indo-Pacific Permit to Trigger Fish in the shallow coral areas to Milkfish and in the deeper blue waters Yellowfin Tuna, Wahoo, Dog-tooth Tuna, Sailfish and Marlin.
This unspoilt eco-system has given Astove a reputation for those wanting to catch GTs and it is probably the best location to make contact with a true trophy monster fish. The tidal flows of water in and out of the lagoon can, at times, be like a river which makes for perfect hunting habitat for GT's and other large species. The general island terrain ranges from heavy shore surf on the windward side to calm coral flats on the leeward side.
Anglers are generally moved around the island on small tender boats with two anglers per guide. The guides are changed each day so you get to fish with different guides all of whom speak good English, are very experienced and know the island very well. Most of the fishing is walking and wading and the boats are used to access the shallow flats and occasionally chase down large fish.