1. Meat is too greasy: Gan fish fat content is high, making its taste greasy, not very suitable for most people's tastes.

2. Fish thorns more and small: Gan fish thorns more and small, easy to be stuck in the throat when eating, resulting in security risks.

3. Fishy taste: Gan fish fish odor is heavy, difficult to remove, affecting its taste.

4. Some people are allergic: some people are allergic to Gan fish, may cause allergic symptoms after eating.

5. Need cooking skills: need certain cooking skills to make Gan fish taste better, otherwise easy to cook broken or overcooking lead to poor taste.

In summary, Gan fish is not a kind of delicious fish.