Thanks all.
bee0677, I'm using a Canon EOS 50D with Canon 100mm macro lens. The lighting was my bud's tank lighting (14,000K 175w MHs in super focused reflectors, T5s).
You can always view the exif info in a pic (provided it exists) with an exif info viewer, such as the free one for Windows from Opanda:
exif viewer.
As a generalization, I think these were shot between F11 and F14 for roughly 1/4 - 1/2 second, ISO 100 in RAW mode. I usually shoot remotely, meaning using my laptop and viewing Live View on my laptop screen and setting everything except focus from my laptop. I always use a tripod, turn all pumps off, and shoot straight through the glass (acrylic in this case).