Well just got my trachy trachy like half hour ago lol, so no valuable experience yet, say he's about 8" +\- and very girthy. Have already seen the way @koltsixx says they use their head to bulldoze through others to get what they want I will say. He pushed my 14" curupira out of the way...
So as some of you may know I have a jaguar cat in a 30 gallon 3'x1.5', he's approximately 4-5". With a ery sp Peru 5-6". The jag is the boss of the two. Discus origins has a trachy 7". Would the two be fine together until the trachy grows another inch or two?
Any personal experience with trachy...