A more thorough explanation:

CUM PISCATIONIBUS

Cum piscationibus is a Latin term used in law to refer to the right to fish or fisheries. It was used to convey the express grant of a fishing right only if the grant was accompanied by possession of the right for a prescribed period. This means that the right to fish was only granted if the person had been fishing in that area for a certain amount of time.

An example of cum piscationibus would be if a person had been fishing in a particular river for 10 years, they would have the right to continue fishing in that river. However, if a new person came along and wanted to fish in that same river, they would not have the right to do so until they had fished there for the same amount of time.

Another example would be if a company was granted the right to fish in a particular lake, but only if they had been fishing in that lake for a certain amount of time. This would ensure that the company had a vested interest in the lake and would not exploit it for short-term gain.

The examples illustrate how cum piscationibus was used to grant fishing rights only to those who had a vested interest in the area. This ensured that the fishing rights were not exploited for short-term gain and that the area was protected for future generations. It also ensured that those who had been fishing in an area for a long time were not displaced by newcomers who had no connection to the area.