Here's mine that I've had for almost 2 years now. They can be tricky and I'll tell ya what I've learned. They are apparently harvested from 2 types of areas. 1 being higher light then the other. It also depends on what type of corals they are hosted by. Porities are the most common from what ive seen. Porities usually prefer more shaded areas areas. The worms alone can usually be sustained by strong flow but supplementing with a phytoplankton or even the smallest variety of copepods. If you can get a hold of an aussie specimen, it's worth it. They always seem to have more mature worms with larger crowns. If I can find an aussie, I would buy it in a 1/2 a heartbeat. Best of luck to ya
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