Fish varieties in US

Hi,

I live in Pennsylvania, US.. I need to know some fish varieties here.. While I get frozen chicken and shrimp, I find fish really difficult... They are mostly not cut.. Also I see fish so tender that it is difficult to fry.. I need some variety of fish which is like Pamplet in India.. Most important is cut one.. If not, what should be done to get it cut..

Thanks in Advance...

Fish varieties in US