I recently was involved with the Ohio Group Buy from George. Myself and a few others purchased 3 boxes of fish. I got 2 Piraya and 2 Cariba of similar sizes around 3 to 4 inches. They arrived wonderfully and I cannot wait to get some more. My Cariba though are really not as impressive to me. I have a highly aquascaped aquarium with many little hiding spots and the Cariba definitaly take advantage of them. The Piraya on the other hand seem to gravitate all over the place and are very active. Will any of this change?