Fish Health - Aeromonas Hydrophila

Health main page

F.A.Q.
Checklist

Aeration
Aeromonas Hydrophila
Ammonia Test Errors
Anaesthetics
Anchor Worm
Bacterial Additives
Blanket Weed
Carp Pox
Cat Damage
Costia (killer)
Columnaris
Common Myths
Cryptobia
Dermocystidium
Dropsy
Dystocia
(Egg Compaction)

Fat Fish
Fish Louse
Foam
Food/Feeding
Furunculosis
Gill Bleeding
Gill Disease
Gill Maggots
Goldfish Ulcers
Hexamita
Leeches
Lymphocystis
Mechanical Fish
Mechanical Injury
Microscope page
Milky Skin
Mouth Cancer
Myxozoa
My Fish Jumped
Neon Tetra Disease
Ozone
pH Crash
Popeye
Post Mortems
Quarantine
Salt
Sepsis
Skin Cancer
Spawning
Sturgeon
SupaVerm
Surgery
Swim Bladder
Tapeworm
Tonic Salt
Tuberculosis
Tumours
Ulcers
Vitamin C
Water Filters
Water Fungus
White Spot


Aeromonas Hydrophila and Pond Lights
Aeromonas Hydrophila

Aeromonas Hydrophila

Aeromonas Hydrophila

Aeromonas Hydrophila
This is the most common ulcer found on fish in a koi or garden pond or a fishing lake.

Aeromonas Hydrophila is in fact a soil bacteria, which is why its so common.

This bacteria is present in all bodies of water no matter how well kept, but its a secondary invader which needs to have the door open for it by say parasite infection, fluke, leeches, fish louse, poor handling (inc netting), sharp objects like rocks and decking and pond lights.

You should never put lights under water - at night they attract the ponds poly culture which the fish will eat. However, when the fish are disturbed they move quickly to escape an assumed predator, and this in turn brings the fish into contact with the lights.

Contact is mainly the head or the caudal carbuncle - the tails drive muscle. These are ideal sites for wounds to become infected with this bacteria. See picture of large goldfish with damaged tail which it caught doing a 90 degree turn - quite common with light damage.

I find the main course is stress - poor water and lack of filtration and over feeding.