What is the meaning of the message Piscata Rosea 4 4 5

In Lands of Lore - The Throne of Chaos, when you're in the Mines of Urbish, at level 3, you find a note saying PISCATA ROSEA 4 4 5

My latin is prety old, but I'm sure Piscata means fish and Rosea means pink, but I don't understand the meaning of it. I'm pretty sure this is not a side-quest (the game doesn't have side-quests), and The Cutting Room Floor doesn't list that as an element from unused content.

Moreover, the comprehension of this is not needed to beat the game, so I really don't understand what it means and why it's here.

Thanks to anyone who helps.