OK, a few questions as my fort rumbles along:
1) I had the idea (perhaps hare-brained) that I could provide safer fishing for my fisherdwarves if I simply tunneled from inside the mountain to the waters edge, forming a little private lagoon which I hoped river fish would swim into. First off, will this work? I'm talking about breaching the riverbank on the same level as the water itself, i.e. when I {k} at the blue tiles on this level, it says "river 7/7" or something like that. Second, can I install some sort of bars or grate that would allow the little fishies through, but not ickier things like (non-fish) predatory animals or goblins? I know I'm making a safer (and shorter) walk back and forth to the riverbank for my fisherdwarves, but I also know I'm making another opening in the mountain and would prefer not to have excess !!fun!! leak into my fort without my permission. ;-)
1b) Oh, and I'm stressing a little trying to plan the actual opening of the riverbank. How can I ensure that my miner, whom I've grown fond of, doesn't drown while still making it possible to install my grate/bars, dig the opening, etc.
2) I caught something in a trap, finally. A goblin snatcher made it past one row of stone drop traps but got snagged in a cage trap right behind that. I have no idea what to do with it. Can I just leave him in there to starve, or must I deal with him lest he escape and make trouble?
Thanks!