Thanks for the posts. I was planning on using it to monitor growth (or lack therof, ;\) ) as well. For future reference, I contacted Paul at the above address and got this:

 Quote:
The kit comes w/ a tagging gun, video, and 10 tags. The tags are a t-bar style that inserts into the muscle of the fish behind the dorsal fin. The tag is left streaming behind the fish. The 10 tags w/ the kit are numbered. Additional tags are numbered or non-numbered tags are available.

The kit is $40.
Additional numbered tags are $1 each.
Non-numbered tags are $0.20 each.
+ shipping

Thanks for your interest.

Paul
I think I'll go with the numbered ones, easier to log, I suppose, but a little spendy!

Dob