I received this nem knowing that it would be in bad condition. I've rehabbed a nem from the same person before (I got them both for free). However I feel this one may be too far gone? What's the best thing I can do to up the chances it will survive?
Assuming it's a BTA, it's possible that it'll probably be fine. They can look terrible and still come back. Let it get some flow to remove any waste (such as dead zoox) so if it's still in what appears to be a glass container, try to use something with holes in it to get some water movement.