[Flash]

your list looks fine for a 40gl... replace the flame with 2 nice looking clowns and you've got a good stocking choice! Pistol shrimp will be fine! I have both a Diamond goby and a yellow watchman (in differnt tanks). the diamond has paird with my pistol in my 90gl, but my pistol isn't shy either, he will come out a little at feeding time and grab what comes near him! in my 29gl i have the yellow watchman, and he just sits at the enterence to his hole comes out at feeding time then back into his hole! both really cool choices! Also I had a firefish pair with a pistol 3 years ago... but I added a goby and it took a nice bite out of the firefish and it died... lol! Gobies that clean the sand are also good for your tank! You're good with your sand bed! they make a home where they want it!