Thanks all for the kind words. Lucky has been trying to cheer me up, my newest little guy. I bought him a leaf hammock (he appears to have slight SBD and I wanted him to have a place to hang out near the surface), and at first he wouldn't go near it except to investigate, but now he just chills on it whenever I pass by, as if to say, "See? This thing you bought me really IS fun! SEE?" As for Ghost, I think he misses Thor because he keeps swimming to the side of the bowl where Thor hung out and checking for him. They had some space between them but at the right angle they could see each other, but not enough to cause a flare up. Just sort of enough to pique their curiosity.
How do you prevent your guys from jumping? I used a big colander (silicone, so it's soft and won't hurt them) as a kind of shield, but Thor actually jumped right over it. I don't use a net to catch them because I don't want to damage their fins. Any advice would be appreciated so I won't have to go through this again. Thanks.