I did not see the deep striations in the leaf. I am sure there is a technical name for the dent along the viens. Those pics looked hairy and smoother. Hairy is a unique feature and I swear I ran across some pics but lost them in the matrix
However, best I can tell is that the Green Shrimp plant is: Blechum brownei (or one of it's subspecies, such as Blechum pyramidatum). So I guess the only way to tell is to let it grow...I still think it looks very familiar.