Welcome to the Diagnostic Clinic at PondDoc General Hospital.  From here you can choose the symptom(s) that your koi and/or goldfish are exhibiting and find probable causes and treatment methods.  Though it's not a fool-proof system it should be very helpful with helping you diagnose why your fish are sick.

If you suspect a certain condition you can easily find information on the different viral infections, bacterial infections or parasitic infestations that affect koi and goldfish by finding it on our list of health problems.

I'm in the process of building our diagnostic clinic so please excuse the links that are not yet finished...

If you don't see your problem here, Visit Our Older Diagnostic Page

Suggest we add any symptoms that aren't listed here.

   Find Diagnostic Guidelines by Symptom

Information by Health Problem

Affliction Type

• I just added new fish.  The water tests are fine but my fish are dropping like flies.
• I placed new fish into my pond within the last month and now my fish are beginning to die.
• I woke up this morning to find all (or most of) my fish dead or dying.
• All my fish are dying right now.
• I just treated my pond with a chemical and now my all koi and goldfish are dying or gasping for oxygen.
• I just changed the water and now all my koi and goldfish are dying or gasping for oxygen.
• I filled my pond up for the first time and added fish right away.  They are acting sick and/or dying.

• Ammonia
• Anchor Worm
• Argulus (Fish Lice)
• Bacterial Gill Disease
• Carp Pox
• Chilodinella
• Costia
• Dropsy
• Egg Impaction
• Eye Infections
• Fin Rot
• Fungus
• Gill Flukes
• High pH
• Ich
• Injury
• Low Dissolved Oxygen
• Mouth Rot
• Nitrites
• Overdose
• pH Crash
• Septicemia
• Scoliosis
• Spawning
• Split Fin
• Trichodina
• Tumors
• Ulcer Disease
• Viruses (Deadly)

• Bacterial
• Parasitic Infestation
• Injury
• Water Quality
• Viral
• Behavioral

• The fins on my koi or goldfish look tattered, worn or eaten away.
• My koi or goldfish have white fungus clinging to them.
• The skin on all or most my koi and goldfish appears to be peeling.
• Several koi have a white film over their eyes.

• There is a red sore coming up on my koi or goldfish.
• There is one or more lumps or bumps on the skin of my fish that look milky white or clear.
• My koi or goldfish has a sore on his mouth or his lips look eaten away.
• My goldfish has what appears to be white specks all over his skin and fins.
• My fish has what appears to be tiny raised bumps only located on his gill plates.
• I see little worm-like threads hanging off the skin and/or fins of my fish.
• One of my koi or goldfish is very fat and sluggish but its scales are not sticking out and his eyes are not bulging.
• My koi or goldfish is very fat and his scales are sticking out and his eyes are bulging out.
• The spine of my fish is crooked.
• There are red streaks showing up through the skin of my fish and/or the fins.
• There's a big bulge sticking out of the side of my koi or goldfish.

• My fish are rubbing themselves against the sides and bottom of the pond.
• My koi and goldfish appear to be gasping for air and/or hanging out by the water return.
• Several of my fish are lying on the bottom of the pond with clamped fins.
• My fish are jumping like crazy.
• One or several of my koi and goldfish are chasing another.
• One of my koi or goldfish is isolating himself and not swimming and playing with the others.
• Lately my koi and goldfish are hiding and won't come up to the top to eat.

• There is foam all over my pond.
• I am getting a reading of Ammonia.
• I am getting a reading of Nitrites.
• My koi and goldfish are gasping for air but they are not dying.
• I believe a toxic chemical has been leaked into the pond.
• There is an oily film on the surface of the pond.

• One of my fish jumped out of the pond and is barely alive.
• One of my fish has a split fin or has injured himself on a sharp object.

• My pH is testing above 8.0
• My pH is testing below 7.0

© copyright, 2008, 2009 PondDoc.com.  Reproduction or use of any content on this website prohibited without written consent from PondDoc.com.  This advice is given free of charge and serves as information only to help you with determining the cause of fish health problems.  The content given is to be used as guidelines only.  By following the guidelines on our website you are agreeing that we will not be held responsible or liable for any losses.  We cannot diagnose your specific case.  We are simply forwarding the benefit of our extensive experience with koi and goldfish health.