The RTC will not survive TX winters. Please, don't place it there, it'd be cruel. Plus the Fish and Game Service would not give you a permit for it anyway.
The RTCs failed to establish a sustainable population even in southern FL (released by the State to tickle fisherman's fishing bone). They die back during cold winter spells. All of FL is still subtropical, except the keys.
You need tropical. Which in the US is
FL keys
US Virgin islands
Hawaii
See last link in my signature for a database of the largest f/w fish in the world (with a few exceptions, like I didn't pay attention to stingrays but sturgeons are there! and I indicated which ones survive in all f/w.)
The RTCs failed to establish a sustainable population even in southern FL (released by the State to tickle fisherman's fishing bone). They die back during cold winter spells. All of FL is still subtropical, except the keys.
You need tropical. Which in the US is
FL keys
US Virgin islands
Hawaii
See last link in my signature for a database of the largest f/w fish in the world (with a few exceptions, like I didn't pay attention to stingrays but sturgeons are there! and I indicated which ones survive in all f/w.)