Bimaculatus Anthias with dark spot on head

[tatersalad]

Hi All,

I've had two bimaculatus anthias in QT for about a week now and I'm following the Serious Reefs QT schedule. One of the two anthias developed a dark spot on its head at some point and it seems to have grown a little in the last few days. It's also slightly raised off the body of the fish. The fish is eating well, swimming in the open, and generally seems normal.

The fish are in a 10g QT tank with some pvc hides, heater, and airstone. 100% water changes every 3 days.

They've been in 2.5ppm copper power from the start, I've also done 2 scoops of metroplex every 2 days and they've had one prazipro bath for 5 hours, 3ml/4 gallons of water.

Is this dark spot anything to worry about?

I'm adding a few pictures and a video link that hopefully works.

Video here, resolution clears up around 10 seconds:

Thanks in advance for any input you can offer!

 

[vetteguy53081]

Hi All,

I've had two bimaculatus anthias in QT for about a week now and I'm following the Serious Reefs QT schedule. One of the two anthias developed a dark spot on its head at some point and it seems to have grown a little in the last few days. It's also slightly raised off the body of the fish. The fish is eating well, swimming in the open, and generally seems normal.

The fish are in a 10g QT tank with some pvc hides, heater, and airstone. 100% water changes every 3 days.

They've been in 2.5ppm copper power from the start, I've also done 2 scoops of metroplex every 2 days and they've had one prazipro bath for 5 hours, 3ml/4 gallons of water.

Is this dark spot anything to worry about?

I'm adding a few pictures and a video link that hopefully works.

Video here, resolution clears up around 10 seconds:

Thanks in advance for any input you can offer!

Looks like the start of a bacterial infection and should be treated with seachem neoplex
Fish is slightly thin. What foods you feeding it?

 

[tatersalad]

Looks like the start of a bacterial infection and should be treated with seachem neoplex
Fish is slightly thin. What foods you feeding it?

Thanks for the feedback. I have kanaplex on hand, would that be suitable? Happy to get some neoplex if that's the best candidate.

They were very thin when I got them from my LFS, they ate voraciously for the first 4-5 days and are eating moderately at this point. Feeding them mysis or LRS on alternating days, 2-3 small feedings a day.

 

[vetteguy53081]

Thanks for the feedback. I have kanaplex on hand, would that be suitable? Happy to get some neoplex if that's the best candidate.

They were very thin when I got them from my LFS, they ate voraciously for the first 4-5 days and are eating moderately at this point. Feeding them mysis or LRS on alternating days, 2-3 small feedings a day.

Kanaplex will also work

 

[Jay Hemdal Verified Community Expert]

Hi All,

I've had two bimaculatus anthias in QT for about a week now and I'm following the Serious Reefs QT schedule. One of the two anthias developed a dark spot on its head at some point and it seems to have grown a little in the last few days. It's also slightly raised off the body of the fish. The fish is eating well, swimming in the open, and generally seems normal.

The fish are in a 10g QT tank with some pvc hides, heater, and airstone. 100% water changes every 3 days.

They've been in 2.5ppm copper power from the start, I've also done 2 scoops of metroplex every 2 days and they've had one prazipro bath for 5 hours, 3ml/4 gallons of water.

Is this dark spot anything to worry about?

I'm adding a few pictures and a video link that hopefully works.

Video here, resolution clears up around 10 seconds:

Thanks in advance for any input you can offer!

Side note - be sure you are closely monitoring the ammonia, in that small of a tank it may build up sooner than three days. Also, 100% water changes are tricky, you need to handle the fish to do them properly, and this lesion may be from a strike injury from handling.

 

[tatersalad]

Vetteguy & Jay - thanks for the info. I am using an ammonia alert badge as I've read test kits don't operate properly with copper in the water. I'll be sure to be careful in handling the fish during the water changes. Thanks!