Angel fish, swallow fish, and butterfly fish are all edible fish. Usually, the more common dishes are five-willow butterfly fish and stewed swallow fish, but they usually eat less and are mostly used as ornamental fish.

Swallow fish is a kind of marine fish, which contains an ingredient called DHA, which is an essential nutrient for the brain and plays an important role in improving people's memory and thinking ability. Butterfly fish is a traditional soup of Hakka in China. It is not only tender, but also interesting. Fish fillets spread their wings like butterflies, revealing two separate and continuous wings.

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Butterfly fish tastes delicious and has high nutritional value. The protein content of fish is as high as 18%, which is rich in more than 20 kinds of amino acids necessary for human body and low in fat. Fish is also rich in vitamins A, B 1, B2, D and E, and minerals such as calcium, phosphorus, iodine, potassium, cobalt and fluorine. The digestion speed of fish is very fast, and it only takes 2-3 hours in human stomach, and the absorption rate of human body reaches 95%. ?

Swallow fish is characterized by large body, few bone spurs, tender meat, delicious taste and rich nutrition (every100g fish contains19g protein and 2.5g fat. ) loved by local people, the fishing season of swallowtail fish is from May to June. At this time of the year, all kinds of delicious food, mainly "swallow fish", also attract the love of many foreigners.

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