Good news and bad news. One of the fish was dead this morning:( Good news is I got another one (wasn't sure if it was okay to leave it at 3 for too long). So far they seem to be fine. Rosy Arrow's still flaring but she's not nipping as much (they swim away from her so I'm guessing that makes her feel better). I was a bit worried one time because she nipped Ghost's tail and shook her but I put her in a seperate cup for a few minutes, rearranged the decorations and when I put her back she still flared and nipped but nothing like before. I guess she's the Queen Betta because no one seems to pick a fight with her. The other two, Silverado and Ghost haven't fought that I know of; they even shared a hiding place for a while and don't react when one of them swims near the other.
The new one is a deep blue veil tale. She seems shy but active (I was trying to turn the cup to get a better look at her in the store but she kept swimming away!) She hasn't fought with the others yet and Rosy only flared at her once before ignoring her, so I'm keeping my fingers crossed. Haven't thought of a name yet, any ideas?