I'd not risk it. These irwini are too precious and they are timid fish, will not really fight back much at all but only rely on their armor and swing the tail. Large RTC will still attempt to swallow and mouth any new comers in their tank and will damage the fish or not unlikely kill by stress.I have never seen these before..... what do the eat? Dp they have a hard body....like a pleco? I have a 4600 gal pond with a LARGE RTC and a 30" TSN,.... do you think there is any chance they could be swallowed by my cats? BTW, I live outside of DC and the drive to Reading is easy.
They are so rare and precious that I am starting to consider a 1200 mi drive up northStill have them