Angelfish red spot

[Joeganja]

I found my flagfin angel dead this morning but I want to know what this is so I can either figure out if it's spreadable to the other fish and what I can do to prevent this from happening again.

 

[sc50964]

Picture?

 

[Joeganja]

 

[Maritimer]

Sorry for your loss - they're lovely fish.

That looks like it may be a bacterial infection. Treatment would be a broad-spectrum antibiotic, either Furan-2 in combination with Metroplex & Kanaplex, or possibly Nitrofuracin Green, administered in a QT.

~Bruce

 

[Humblefish]

Could be a bacterial infection or just an injury. How long did you have this fish?

 

[Joeganja]

Could be a bacterial infection or just an injury. How long did you have this fish?

Since February. Hadn't lost any fish since then.

 

[Humblefish]

Since February. Hadn't lost any fish since then.

I feel an injury is the most likely explanation here. I would just keep a close eye on all your other fish. If you have a UV sterilizer, now would be a good time to run it (just in case.)

 

[4FordFamily]

I feel an injury is the most likely explanation here. I would just keep a close eye on all your other fish. If you have a UV sterilizer, now would be a good time to run it (just in case.)

X2. When fish die they often show red streaks and damage you didn't see hours before. I've never figured out why -- perhaps it's infections I didn't notice that are worsened as the fish dies? Not sure. @Humblefish do you see this?

 

[Humblefish]

X2. When fish die they often show red streaks and damage you didn't see hours before. I've never figured out why -- perhaps it's infections I didn't notice that are worsened as the fish dies? Not sure. @Humblefish do you see this?

Slime secretion becomes very active just after fish death. Slime contains large amounts of nitrogenous compounds and these provide good nourishment for any & all microorganisms living in your aquarium. So basically, bacteria (even the good kind) begins eating away at your fish almost immediately upon death; this is why post mortem decomposition can look like an infection.

 

[4FordFamily]

Slime secretion becomes very active just after fish death. Slime contains large amounts of nitrogenous compounds and these provide good nourishment for any & all microorganisms living in your aquarium. So basically, bacteria (even the good kind) begins eating away at your fish almost immediately upon death; this is why post mortem decomposition can look like an infection.

Makes sense and explains what I've seen! Thanks!