From ice-out till late May you get mainly carp and some rainbows, plus the odd brown, coho and lake trout. Cleos, or spawn under a float, are most dependable. By the end of May there will be lots of carp, including some really huge ones.
There's pretty good fishing for sheephead off the Lake Ontario end of the piers through the summer. You'll get them on Cleos, Rattle Traps and Shad Raps. Most are about 3 - 5 pounds and they're a lot of fun on a bass rod.
By the end of August you start to get some chinooks show up at night. Rainbows, browns and lakers return by October and stick around through the winter.
You can catch pretty much anything there -- smallmouth, pike, white bass, you name it. You'll need a net with an extension handle, as the water is about five feet below the top of the pier.