Help - firefish is suddenly sick

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Sonam

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Hello All,

Our firefish was fine last evening. She/he was eating normally and doing her usual routine. Generally she hangs around the front of the tank, hovering and periodically eating copepods or whatever. She also swims under the rocks and corals.

Today we found her in a corner of the tank she rarely visits looking at pictured below.

She lives in a 125 gallon system that's been running since October, and was an upgrade from a mature 90 gallon system. We had an outbreak of marine velvet when the upgrade was installed and left the system fallow for 2 months.

We had one powder blue tang get velvet in the period since December - but it was a new addition. We quarantined it for a month but maybe that wasn't long enough. It died in February I think.

We haven't had any issues with our remaining fish until our sand sifting goby died a few weeks ago. The goby had a previous encounter with a large bristle worm (we could see the spines sticking out of his mouth and body) and he nearly died but recovered in quarantine. It seemed like the goby had another encounter with a large bristle worm (the worms and the gobies seem to occupy the same caves under the rocks) and, like this firefish, was acting listless suddenly and we could see spines sticking out of his body. We weren't able to capture him to remove him, he kept going under the rocks. He wasn't interested in food so we couldn't trap him. The next day we found his corpse covered with bristle worm spines. He had not acted sick at all.

We were worried about the firefish because she goes into the same caves. We (perhaps this was a mistake) got a coral banded shrimp at the recommendation of our LFS. This shrimp has expressed zero interest in our killer worms. We did see it raise it's Pinchers to the fish but they seem much faster than the shrimp.

Currently we've done a fresh water dip to see if any of the white spots would fall off the fire fish but they did not. She is currently in a cycled quarantine tank. We do have live rock in there we can remove if copper is necessary but prefer not to stress sick fish with ammonia if we can avoid it.

What does this look like? Is this a parasite or is this bristle worm damage?

SG 1.025
Nitrates 32 (our system hovers between 20 - 32, there is a person in the house that likes fat fish).


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A bit tough to see in the pictures, but I'm leaning bacterial infection. Here's Humblefish's treatment advisory:

Bacterial infections:

Symptoms - Sometimes it's self-describing: Popeye/cloudy eyes, fin & tail rot, dropsy (bloated fish), etc. But some other bacterial infections, such as furunculosis, hemorrhagic septicemia, etc., can have varying visible symptoms. Any redness or open sores/wounds on a fish should be viewed with suspicion. Also, a white film or fungus-looking growth may denote a bacterial infection. It’s important to note that in many cases a bacterial infection is usually secondary in nature to a parasitic infestation such as ich, meaning if a fish has been battling ich for a while then his immune system has been lowered. This makes infection more likely for many opportunistic, harmful bacteria.

Treatment options - Broad spectrum antibiotic medication i.e. one that treats both gram-positive and gram-negative bacterial diseases. Examples of this include Furan-2, Kanamycin aka Seachem Kanaplex, Nitrofuracin Green Powder, Triple Sulfa Powder, or a combination of using both Erythromycin & Minocycline. The latter can be accomplished (albeit expensively) by using freshwater Maracyn 1 & 2 and then doubling the dosage for saltwater use. When battling a particularly nasty bacterial infection, combining Furan-2, Kanaplex and metronidazole (ex. Seachem MetroPlex) can be very effective (and safe). Props to “hedgedrew” for enlightening me of this.
 
To me, visually it appears to be ich. Keep in mind though given the history you provided I would not rule out bristle worms. Personally I have never dealt with them, at least causing damage to a fish anyway. Keep in mind the white spots from ich, are entrance wounds, not the actual parasite. So these white spots could be an injury. I know I haven't been much help here. One thing you can definitely do Is catch the fish and move to a QT tank. If the white spots continue to appear, you then would know it was ich, and then treat properly. If they go away on their own, without treatment then you can chalk it up to the WORMS!
 
Thanks for the replies!
The firefish is in our QT now. It is a cycled tank with live rock and a bare bottom. No worms.

We have kanaplex and metroplex on hand so will look at directions on use. Antibiotics can't hurt even if the wounds are from the killer worms...
 

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