If it is basic farmland, then according to Article 17 of the Regulations on the Protection of Basic Farmland, it is forbidden for any unit or individual to occupy basic farmland to develop forestry and fruit industry and dig ponds to raise fish. Article 33 Anyone who, in violation of the provisions of this Ordinance, occupies basic farmland to build kilns, build houses, build graves, dig sand, quarry, mine, borrow soil, pile up solid wastes or engage in other activities that destroy basic farmland and destroy planting conditions, shall be ordered by the land administrative department of the people's government at or above the county level to make corrections or governance, restore the original planting conditions, and be fined for occupying basic farmland and farmland reclamation fee/kloc-0 times but less than 2 times; If a crime is constituted, criminal responsibility shall be investigated according to law.
Generally speaking, there will be no sentence, and even if there is a sentence, it has nothing to do with the village. Can only be handled by the land administrative departments of the people's governments at or above the county level.
If it is not basic farmland, but other cultivated land or land: it is not illegal to dig fish ponds for agriculture.
Whether cultivated land is basic farmland: first, there should be signs of basic farmland protection next to cultivated land, and second, you can consult the local land management bureau.
If there is an original contract, the contractor shall not change the cultivated land use of the contracted land without authorization, and shall use the land according to the purpose agreed in the original contract.
As for compensation, ask me again when you determine the attributes.
By the way, your house should be a fish pond when contracting. If you contract and dig it yourself, it will be very troublesome.