Some info I found which may help
One trend in largemouth bass management is the stocking of Florida-strain largemouth bass. When conditions are appropriate, Florida bass grow larger and faster than do northern-strain bass. According to some scientists, "Florida bass" (as they're commonly called) are a separate species, but **their appearance is so similar to that of the northern-strain bass is so close**
With the appearance in the 1970s of bass approaching and exceeding 20 pounds, California proved what Florida bass stocking can do under the proper conditions. The state soon started stocking Florida bass in lakes and rivers all over California.
Texas soon followed suit. Lake Fork was impounded in 1980 and stocked with Florida bass. The lake had completely filled in 1985, and by the late '80s was one of the hottest largemouth fisheries on the planet, with double-digit largemouths being caught on a daily basis and anglers from around the world flocking to the lake with the expectation of catching the fish of a lifetime. Texas officials then started stocking Florida bass around their state.
Now all the Gulf Coast states have stocked Florida bass to some degree, and other states, from Arizona to Oklahoma to South Carolina to Arkansas, also have active Florida bass stocking programs.
Florida-strain Largemouth Bass
In southern United States reservoirs this genetic strain of largemouth bass has produced record-sized fish. Pond results have not been as productive. Florida-strain largemouth bass are less temperature tolerant than our native, northern-strain largemouth. Since temperature effects in ponds can occur quicker and last longer, the effect of winter temperatures can wipe out a pond owner's attemp to produce trophy Floridastrain largemouth bass. It is much more productive to stock northern-strain largemouth bass and manage your pond for big bass
There are 2 subspecies of largemouth bass: the Florida
largemouth and the northern largemouth. The Florida
strain of largemouth existed in Florida originally, but with
stocking programs, they are now found in most of the
south and they are very prevalent in California and
Texas. Florida strain largemouth don't live as long as
northern strain largemouths, but they grow much faster
and bigger. The typical florida strain largemouth should
get up to 10 to 12 pounds compared to 6 to 8 pounds for
the northern strain largemouth. If the waters provide
good structure, with a good food supply and a long
growing season, florida strain largemouth bass can weigh
over 20 pounds whereas, the northern strain largemouth
rarely exceeds 10 pounds.
