Ocean Acidification and Small Fish

I knew about the rise of ocean acidification.  I didn't know the sea is absorbing CO2.  http://bit.ly/1ef4pZ6

This is a stunning depiction of fish back in 1958. Are shrinking fish due to ocean acidification?  Check this from RadioLab. The size of fish now are smaller. http://wny.cc/1gsKnJb

It makes me think about shrinking ice.