Ref. No. 39/1093
In the name of Allah the most Gracious the most merciful
The answer to your question is as follows:
Ulama have different opinions in regard to the prawn eating. Imam Abu Hanifa is of the opinion that prawn does not come under the category of fish which is lawful. So you are suggested to avoid prawn eating.
And Allah knows best
Darul Uloom Waqf Deoband