"Taihu No.2 Shrimp" is a common shrimp species, also known as hairy crabs. Although Taihu No.2 shrimp has many advantages, such as delicious meat and delicate taste, it also has some disadvantages, including:

1. Higher price: Taihu No.2 shrimp is a kind of high-quality shrimp, so the price is relatively high. For some consumers, it may be beyond their budget.

2. Seasonal supply: The production season of Taihu No.2 shrimp is limited, usually concentrated in autumn and winter. This means that in other seasons, it may be difficult to obtain fresh Taihu No.2 shrimp, or it needs to be preserved by freezing.

3. There are food safety hazards: Due to the particularity of the growth environment of Taihu No.2 shrimp, there may be some food safety hazards. For example, the water in Taihu Lake area may be polluted, and there may be some parasites in shrimp, which need to be treated and checked before cooking.

4. Skilled handling: Cooking Taihu No.2 shrimp requires certain skills, especially the steps of shelling and handling shrimp paste. It may take some time and practice for people who are not familiar with handling shrimp.

These shortcomings do not mean that Taihu No.2 shrimp is worthless, but remind consumers to consider these factors when choosing and eating. If you are interested in Taihu No.2 shrimp, I suggest you know more about it before buying it, and make sure to buy it from reliable sources.