Review Detail of Eufrasio in The Path Of A Fishman

It's a good story material. I've never heard a story about fishmen! The first thing that came to my mind is the pixar characters from "Luca", but in the end, they are different. I had a hard time picturing the scenarios. I wish I could see more details to the word. Since they are fishmen, wouldn't they be underwater? In another hand, the conversations are funny and full of action