I wish I could find one in my area too.
I used to have brackish cat sharks, also known as colombian sharks, about 8 inches long. Unfortunately they both died after five years, they were successfully acclimated into saltwater and I reccomend these as well. They can be found in a lot of LFS as brackish and even freshwater cat sharks. Resembles a catfish a lot more than the coral cats pictured above.
I will post of picture of one tonight.