Yellow Tang - Brown Spots?

[Mkissane]

My YT has developed some brown coloration. It and all fish have been very healthy. All other fish appear to be normal with no unusual markings. YT is acting normal and eating well. Water parameters are normal and have been very consistent. Fish get along well with minor territory guarding at times but no major aggression in the 180 gallon tank. I need help identifying and treatment suggestions. Thank you!

 

[KJ]

Look like bacterial infection.

TANK TERROR: Bacterial Infections in the Reef Tank - REEFEDITION

Editor’s Note: The reef aquarium hobby is not for the faint of heart. Maintaining a complex ecosystem can be a daunting task with many variables in play that all have effect on one another. However, beyond the effort to maintain the ecosystem and address common day-to-day Read more here...

www.reefedition.com

Bacterial Infections

Why fish get bacterial infections What You Need To Know: * Infections can be caused by either Gram‐positive or Gram-negative bacteria. Gram-negative infections are typically more virulent, and more common in marine fish. * Bacterial infections are often "secondary" to a preexisting parasitic...

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[Big G]

Those redish areas can be from a variety of issues, but more than not it can be water quality problems. Do you run a skimmer? Is it doing its job? I'd try first a big water change and then observe. If that doesn't help and the red areas increase or you start to see red streaks as well, it's time for antibiotics in a QT. You have some beautiful corals there and dosing kanaplex + Focus + food + vitamins can be done with some risk to corals and inverts. Using a turkey baster to remove the uneaten food helps. But if you have a QT its much easier and less risky.
In the QT, NFG powder would be my first choice. Furan2 + Kanaplex + Metro would be next choice for 10-14 days.

 

[Mkissane]

Thank you! My water quality seem to be good. I just performed a 30 gallon change last Sunday. I plan on doing another today. Can’t hurt. My recent Triton ICP text was all normal. My skimmer is working well. Is it common for only on fish to get an infection? I have a QT ready so I can do that. Thanks again.

 

[Mkissane]

Look like bacterial infection.

TANK TERROR: Bacterial Infections in the Reef Tank - REEFEDITION

Editor’s Note: The reef aquarium hobby is not for the faint of heart. Maintaining a complex ecosystem can be a daunting task with many variables in play that all have effect on one another. However, beyond the effort to maintain the ecosystem and address common day-to-day Read more here...

www.reefedition.com

Bacterial Infections

Why fish get bacterial infections What You Need To Know: * Infections can be caused by either Gram‐positive or Gram-negative bacteria. Gram-negative infections are typically more virulent, and more common in marine fish. * Bacterial infections are often "secondary" to a preexisting parasitic...

www.reef2reef.com

Thank you! I’m going to read now.