All are shot on Canon XTi.
First 3 are using 100mm 2.8 macro.
Lionfish is with a Sigma 24-60mm 2.8.
Unless edited out, you can usually save a photo to your hard drive and then "right click --> properties --> Summary --> advanced"
This will give you aperture, focal length, exposure info etc.
Feel free to do so with my pics.
Thanks for the comments.
I think I want to try using an external flash for in tank macros.... Now to buy one...