they looked to me just like pink grapefruit pulp pieces - and they actually resemble a lot to. I must admit I delibrately chose to believe that! I had some doubt b/c I did strain the grapefruit juice so it was quite strange finding all that pinkish stuff...but it exactly had the same color of pink grapefruit.
Just to let everybody know how a dead fluke might look like! This is Oriental liver fluke (Cionorchis Sinensis). Being smallr and lighter colored that most common liver flukes it can be easily mistaken.