Something else you can try (it worked for all four mandarins I've had over the years) was soaking frozen foods in Selcon. I used to actually feed my fish, and everything got Selcon (now they fend for themselves between occasional ArctiPod squirts). Every mandarin I've ever had ate frozen, so I'm apparently the anomaly. I bought my first one four months after setting up my first salt water tank (40H) when people said they would not live longer than 6 months in captivity. My first one lived 5 years (and survived a 6 line wrasse tankmate for two of those years-wrasse got a new home). Your tanks been set up for a while, so you've got an established population. With the melanarus, there is some competition. The melanarus is larger and likely bolder, so seeding is not a bad idea. How often will be a trick, but if you have a fuge with no predation, you can keep populations pretty high. 6 lines are PITA's, so you may not have the same issue, but keep an eye on how the two interact. You'll enjoy your mandarin. Once it gets settled in, it'll start to feel more at home
