There are leaches on my bass! My neighborhood pond has some nice fish, and they come with some small leaches, about 3-4 in each basses mouth. Anything I can do? Is it something to worry about?

Fairly common, though prevalence varies by waters, and no, not much you can do about it. Most likely what you are seeing is a very small leech known as Myzobdella - at least those are the ones that hang out in bass mouths around here  Mixed reports on whether they are harmful or not, though they will leave ulcerations on the bass.

-T9