It is possible but your kuhli loach could end up being food for your Texas depending on its size. I have seen your username before on another site....Im a fan of blood parrots as well.
awesome, my blue is still a juvi, wanted to add them early so that they could reach a decent size as he grows too. Yeah, im on parrotcichlid.com a ton. What is your name on there? add me as a friend if you want.
My guess is that it'll probably get eaten when your texas gets big. They like to swim really fast up and down the glass after a water change. That'll be the texas's chance for a worm like snack. I love black khulis. In my experience they survive just about any conditions (besides being housed with fish that will use them as a snack).