fish disappearances

I have a 32 gallon bio cube and I recently did a water change and for some reason I think it might have killed my skunk shrimp and lawnmower blenny. I haven’t seen them for a while now and I fear they’ve met their end. The other tank mates are perfectly fine (two clownfish, a pincushion urchin...

Hey everyone I'm having an issue with my 55 gallon mixed reef. I have/had monti eating nudis so in the past 6ish months I've bought multiple Coris wrasses, yellow and green "over the course of months". EVERY TIME I buy one I acclimate it and add it to the tank, they disappear forever. I have not...

Luckily I just pulled an 8" Eunicid worm from my sump today that was on the glass of the return section. I've only had the tank running for 10 months now, but used a bunch of rock from my previous setups. Is it more likely than not that there are others in there as I have had mysterious fish...