The following is my own private opinion and not a reflection of the site:
The sad part of the Ohio regs is that they don't know what they are doing, and have destroyed what they set out to protect.
T radix had a subspecies that appeared in an isolated area of Ohio... a protected parkland in the western part of the state.
There are no T radix in Indiana, so this insular population was a remnant of the prairie from hundreds of years ago, when it actually extended from westward, into Ohio.
DNR, in their infinite wisdom, required pit tagging of all T radix found in the area... and they tagged even very small specimens. As a probable result, there are very few now found in the park, where there were once plentiful findings.
And in yet another wise move... they imported the western T radix and released it in the area... thus destroying the insular genetics of the subspecies.
!!!
Meanwhile, all herpetologists who live in Ohio are banned from owning T radix.