Tuna is a great low FODMAP choice. It contains a lot of proteins and fats and almost no carbs. Both canned tuna in oil and in brine are low FODMAP.
Avoid canned fish in flavored sauces, as they might contain ingredients that are high FODMAP.
Tuna, opah, and mackerel sharks are the only species of fish that can maintain a body temperature higher than that of the surrounding water. An active and agile predator, the tuna has a sleek, streamlined body, and is among the fastest-swimming pelagic fish – the yellowfin tuna, for example, is capable of speeds of up to 75 km/h (47 mph). Found in warm seas, it is extensively fished commercially and is popular as a game fish. As a result of overfishing, some tuna species, such as the southern bluefin tuna, are threatened with extinction.
Canned light tuna in oil is 29% protein, 8% fat, 60% water, and contains no carbohydrates while providing 200 calories in a 100-gram reference amount. It is a rich source (20% or more of the Daily Value, DV) of phosphorus (44% DV) and vitamin D (45% DV), and a moderate source of iron (11% DV).