Bacterial infection? Injury or other?

[all Things Aquatic]

Can anyone help identify what could have killed this blonde Naso tang? He came out of QT medicated with copper and looked beautiful. Took to a customer’s tank and he died one day later snd had these black marks all over him. Anyone know what it could be?

 

[Jay Hemdal]

Can anyone help identify what could have killed this blonde Naso tang? He came out of QT medicated with copper and looked beautiful. Took to a customer’s tank and he died one day later snd had these black marks all over him. Anyone know what it could be?

View attachment 2465541

Those marks don't strike a familiar chord with me.....other than bruising.

Did the marks extend to the other side of the fish or just the right side?
Do you know what other fish they have in their tank?
Do you know the salinity/specific gravity difference between your system and the customers?

Jay Hemdal



Jay

 

[all Things Aquatic]

Those marks don't strike a familiar chord with me.....other than bruising.

Did the marks extend to the other side of the fish or just the right side?
Do you know what other fish they have in their tank?
Do you know the salinity/specific gravity difference between your system and the customers?

Jay Hemdal



Jay

Thanks for the reply Jay. I will find out if the black marks are on both sides or just the one.

They have a pair of clowns, a blue hippo, and a small snowflake eel. We acclimated a naoki wrasse at the same time as the blonde Naso and he’s doing fine.

customer’s tank is at

 

[all Things Aquatic]

Thanks for the reply Jay. I will find out if the black marks are on both sides or just the one.

They have a pair of clowns, a blue hippo, and a small snowflake eel. We acclimated a naoki wrasse at the same time as the blonde Naso and he’s doing fine.

customer’s tank is at 1.025, same as our QT tanks at the store. No ammonia, or nitrites, and very low nitrates.

The only issues he’s had with the tank was : we saw flukes on his clowns a couple weeks ago, so freshwater dipped them and medicated API general cure. The clowns now look fine, and the blue hippo never had them. Think it could be related?

 

[Jay Hemdal]

Thanks for the reply Jay. I will find out if the black marks are on both sides or just the one.

They have a pair of clowns, a blue hippo, and a small snowflake eel. We acclimated a naoki wrasse at the same time as the blonde Naso and he’s doing fine.

customer’s tank is at 1.025, same as our QT tanks at the store. No ammonia, or nitrites, and very low nitrates.

The only issues he’s had with the tank was : we saw flukes on his clowns a couple weeks ago, so freshwater dipped them and medicated API general cure. The clowns now look fine, and the blue hippo never had them. Think it could be related?

Sorry, I stumped. Aside from bruising, I can't tell you what this might be. I don't think it is related to flukes, those kill fish much slower, weeks not overnight.

Jay