A couple guides use live bream. Go to https://tpwd.texas.gov/
to see the regs on baitfish and retention of a receipt from where you bought them. There are no restrictions on Lake Fork for use of live bait, other than what I posted below.
This is what I was able to find...
Live fish, including personally caught live bait, cannot be transported in a vessel in water that comes from the water body where they were caught. Personally caught live bait can be used in the water body where it was caught.
Anglers are allowed to transport and use commercially purchased live bait in water while fishing from a vessel provided persons in possession of the bait have a receipt that identifies the source of the bait. Any live bait purchased from a location on or adjacent to a public water body that is transported in water from that water body could only be used as bait on that same water body.