I've had a naoko wrasse in QT for a couple of weeks (observation only, no medication) and it had been doing fine until yesterday morning when it started struggling. It's like it's being blown around by the (weak) current in the water, doing somersaults, sometimes landing upside down on the sand for a few seconds. I fully expected to wake up to a dead fish this morning but it's hanging on in there. At the same time I noticed a white mark on it's head, which looks like an injury to me (photograph below). The white mark is less noticeable this morning.
I went into my LFS and they said it didn't look like disease, and there wasn't much I could do besides keep feeding and cross my fingers. It didn't eat yesterday afternoon or this morning so I'm sure it's not in a good way. I'm pretty sure it's not aggression - the only tank mates are a small tomini tang, a peppermint shrimp and a couple of emerald crabs and some snails. I've not seen any aggression at all from the tang. Pretty sure it's not water chemistry either - nitrates are around 10-15, PO4 around 0.03, salinity 1.025 and the tang seems happy. I don't like watching helplessly as it tumbles around in the tank - is there anything I can or should be doing to give it a fighting chance?
Short video: https://www.youtube.com/KN66JhJOLs0
I went into my LFS and they said it didn't look like disease, and there wasn't much I could do besides keep feeding and cross my fingers. It didn't eat yesterday afternoon or this morning so I'm sure it's not in a good way. I'm pretty sure it's not aggression - the only tank mates are a small tomini tang, a peppermint shrimp and a couple of emerald crabs and some snails. I've not seen any aggression at all from the tang. Pretty sure it's not water chemistry either - nitrates are around 10-15, PO4 around 0.03, salinity 1.025 and the tang seems happy. I don't like watching helplessly as it tumbles around in the tank - is there anything I can or should be doing to give it a fighting chance?
Short video: https://www.youtube.com/KN66JhJOLs0