Any know what disease this is

[the little mermaid]

I recently added a new selection of fish into my well established garden pond I did look at the new fish before I added them and they all looked healthy so in they went now there has been 3 new fish dead in about 2 week period 1st a small goldfish what looked like the bigger fish had bullied and bitten its fins I treated the water with medi fin Tetra med then a week later a commet died it had a couple of lumps and bumps and patches of brown and green mouldy looking patches all over its body now today another fish has died it looks like green fungus or algae growing over it I did get a few pictures of anyone has seen or knows what this is and how to treat my pond from any spread of diseases to my other fish

 

[the little mermaid]

Does anyone know what this is

 

[Mmathis]

It looks like this:

Saprolegnia in Freshwater Fish

Saprolegnia is a fungal infection in freshwater fish that can be deadly. Learn the causes, treatment, and prevention.

www.thesprucepets.com

 

[j.w]

@the little mermaid