Choosing and Buying Butterfish (Tongue Sole): Where and How Much?

Are you curious about cá bơn (bull tongue fish)? Looking for tips on how to choose the best ones and what their prices are like? Read on for all the information you need!


Cá lưỡi trâu is a common type of fish used in daily meals, although not everyone may be familiar with it. In this article, we will explore more about this fish.

1 What is sole fish (cá lưỡi trâu)?

What is sole fish (cá lưỡi trâu)?
What is sole fish (cá lưỡi trâu)?

Sole fish, also known as flounder, belongs to the Soleidae family. This species of fish usually inhabits fresh water and feeds on spineless crustaceans.

Sole fish typically have a flat, oval-shaped body. In their early development stage, their eyes are located on different sides, but as they mature, their eyes move to the same side. The side with the eyes faces upwards, while the opposite side faces downwards. They are known to camouflage themselves by blending into mud layers that match their skin color, making it difficult for prey to detect them.

2 How to choose and buy

How to choose
How to choose

To select fresh sole fish, it is recommended to check their eyes. Clear eyes indicate freshness, while cloudy eyes suggest the fish is no longer fresh. Fresh sole fish also have a bright red portion, whereas spoiled fish may have a dark red or black portion. Additionally, when pressing your finger on the fish’s belly, fresh sole fish will exhibit elasticity.

3 Where to buy and how much does it cost?

Where to buy and how much does it cost?
Where to buy and how much does it cost?

You can find sole fish at various markets and wholesale markets such as:

Reputable seafood trading websites like,, and also offer sole fish for sale.

Sole fish is considered a rare and valuable fish often used in high-end restaurants. It possesses a fragrant taste and is rich in nutrients, which contributes to its higher price. Fresh sole fish from Korea can cost around 900,000 – 1,200,000 VND/kg, depending on the season and place of purchase.

In conclusion, we have provided information about the sole fish. We hope that you have gained interesting knowledge from this article.