Xenoophorus in trouble!

Bad news - I am forwarding herein a letter from Juan Miguel Artigas Azas, who visited San Luis Potosí recently:

I am a little depressed because there has been 3 weekends in a row that I go to the field to look for Xenoophorus captivus to write an article about them and I haven' t yet been able to find a single specimen. Most localities where I used to find them are now dry. I travelled along Rio Santa Maria from the Type locality at Santa Maria del Rio up to Jesus María and there is no water anymore, all the beautiful springs I knew and even the small dams along it are dry.... Just some pools Near Rodrigo (near the place where Andreas and me found them 20 years ago) but I wasn't able to collect any fish there. I also went to Río Tierra Quemada, where last May Rusty and I tried hard to collect any without luck, and I couldn't get anything but Goodea gracilis again. Omar told me he had collected many six months ago but as some of those Goodea have black markings and blue shines I suspect his students may have confused them. I will keep looking for them. But the situation is dramatic for all this fish.

Regards, Juan Miguel Artigas Azas