ok, I have these 2 syno's in my tank for roughly 5 years (tank is in major recovery after a bad bout with BBA). I have looked through planetcatfish and cannot single out what they are so I thought I'd give everyone a chance to give it a shot or at least see if anyone had these. They are from Petsmart, were labeled as getting 3 inches max and have probably reached 6 or 7 inches. They are not too bad of a fish but they do make a mess when they zip back and forth at each other on occasion. It's never too serious other than uprooting plants and moving food around if I have just fed the tank. I have just fed the tank, which is why you see white spots in the water.