I've said this before but I've had rotten luck with ropes over the past year. I have tried to introduce them to my bichir tank several times and most die before they make it out of QT. I believe I've bought about 8-10 ropes over the last year and 2 have made it past QT. Most die within 24-48 hours while other have taken 1-2 weeks to pass. Some ropes are quite active while some I've found to be quite inactive. Yours might be fine and just be more of a recluse