Hey I just picked up a Green Mandarin and im concered i dont have any copepods for him to feed on. It's a relatively new tank and I'm looking into just putting them in for him. If I want to add them to the tank should I get live ones or some frozen ones they have? Also how much of them should I add to sustain my mandarin and how do I store my extras untl he needs another feeding? Any help would be appreciated... Thanks!