Yesterday was the first time diving the Comal. 74 degree water temp and easily 15 feet viz. We made three dives and in between took a break and rode down the shoot in flippers and masks. Pretty cool. Lots of fish. Some I identified were black bass, bluegill, buffalo, carp, a couple of fairly large turtles and a species of catfish I had never seen before. I believe it's called the armour plated catfish. It's black and appears to be covered in plates. I found a schol of them (6) close to the south bank under the floating vegetation. The average size was approximately 14 inches. I did some research and found out it is native to South America and sold here for aquariums (alge control).They've been introduced to our waterways by being dumped from aquariums. They thrive in clear moving water which remains at a steady temp year round (Comal). Even though it is a two hour drive for me, I'm going back as much as possible before the tubers invade.