My guy is about 3.5/4ft and he’s not as aggressive as I’ve heard people say. He hasn’t killed any fish or inverts. He’s only crazy around feeding time and has tons of space including a crazy pipe system I made out of giant pvc. Was looking to introduce another bigger aggressive eel like a dragon or similar genius. Just curious if anyone has any experience with introducing I’m sure he’ll be fine once the new guy is in but when the new one is introducing and swimming around he could def go after him out of curiosity and he has some nice teeth so I don’t want any damage if I can. Thanks!