I've had a hard time finding a good compatibility chart. All of the charts I find from a decent source (liveaquaria for instance) are terribly difficult to read. I recently found this one over at Petco; however, the 'compatible' stuff is different than several other charts I've seen (jawfish are compatible with each other with caution for instance). So, I have an idea. I could code a chart similar to the Petco one, and if you guys here could give advice to what is compatible or not, then I can make a more accurate chart that is easy to read. Any takers?