Colts tend to grow much faster, their polyps more densley populate the whole coral but the real dead give away is the almost semi transparrent branches of a fully extended colt. colts are also a much more slimey coral. Fragging a kenya tree is easy since it will esily attach its self in low current, but because colts are so slimey they usualy need to be peirced with something in order to attach or they simply blow away in the current.
Colts alos feel very slimey to the touch, kenya trees are much more solid, like a leather coral.