I recently aquired a 29 gallon tank that has just one gourami. He/she is about 4 inches long and I am told that he was a silver blue color with spots at one time. Now he is a mottled color blue w/out spots. When I aquired this tank it had been left in a terrible state. The water had evaporated to about 4 inches deep and was very dark and stale. This fish was actually a surprise to find as I thought that there couldn't be anything alive in this tank. I put him in a sun tea jar and immediately cleaned and set up the tank for him. He seems to be doing well, but he is alone in the tank. Any suggestions on good "buddies" for him and how many I should add. I know that many fish do best with tankmates of the same species, but I would like to add some diversity as well. Suggestions would be helpful. Also, any thoughts as to why he/she has lost his spots?