グロキジウムは痛い？

カワシンジュガイのグロキジウムに大量に寄生されるとサケ科などでは死に至るような話も聞くのだが・・・

タナゴは喜んで食っているように見える。

そもそもグロキジウムだろうか、これ？

多分そうだと思うんだけど・・・

The moment when a female Japanese freshwater pearl mussel (Margaritifera laevis) released it's grochidia.The main host of this mussel is juvenile cherry salmon (Onchorynchus masou).I think this mussel release it's lump of larvae and  feed juvenile trouts it reflectively.

The fish in this movie is Japanese bitterling,Acheilognathus melanogaster.

And he eats it deliciously....Can he be the host of this mussel?