The first fish is not a chub, it is a shiner... either common or striped... you have both in SE Ontario and I cannot tell the difference (likely more my lack of familiarity with the fishes than anything else). The deeper body and the pinkish edges to the fins just scream Luxilus shiner.
I'm going to guess hornyhead female based on the brassy spot behind the eye (which would be bright red on a male... plus she looks like a nice plump female to me).
FYI...I like answering questions, but I'm getting my information form some experience and then narrowing things down using the Peterson Field Guide (if your into fish, you should get one, there is a bunch you can learn in there and it is fun).