2 questions in 1

I have 2 unrelated questions but I am asking them at the same time. One, what is rain bait, how big, can you get it in the cast net. Second, I was going to dowling college yesterrday and I passed bubbles falls and rattlesnake fishing access. Does anyone know what kinds of fish are in them, good fishing or no, and any tips. Any info about either question is greatly appreciated.