Strange Growths On Corydoras Davidsandsi

[Richie Hell]

Tonight I've noticed several strange 'blobs' on a Corydoras Davidsandsi.

It's definitely something that's developed very recently. Water quality is fine (ammonia 0, nitrite 0, nitrate 20ppm, pH about 7, but very hard water), and there are no other signs of disease/illness in the tank, except one Glass Catfish isolated in a breeding net with swim bladder difficulties.

I've never seen anything like this, in any books or anywhere.

You can see in the photo there are a number of these black balls on his back, around the base of the dorsal fin. These stretch back too and over the adipose fin. The look like bubbles, or egg shaped, but I have no idea what they may be.

Anyone got any clues?

 

[WILDER]

So the black balls look soft like filled with fluid.
Can be bacterial to parasite, but corys are more prone to the bacterial side.
Can you see any thing in the bubbles like a parasite.

 

[Richie Hell]

Can't see anything inside them.

They look extensions of the skin, kind of like as if they were filled with fluid as you said.

 

[WILDER]

Ok can you issolate the cory as if the bubbles burst they will infect the tank.
I would try a bacterial med for now.