Laguna Koi Ponds

(949) 494-5107

Koi Information Koi Diseases Finrot and Ulcers

Laguna Koi Ponds
20452 Laguna Canyon Rd.
Laguna Beach, CA. 92651
Hours of Operation:
Mon-Fri 9-5 Sat 9-5 Sun 10-5
949-494-5107
Pond Calculator App for Android

Finrot and Ulcers

Finrot and Ulcers

A number of bacteria are associated with finrot, lesions and internal hemorrhaging, notably Aeromonas and Pseudomonas. Ulcers usually start at the site of an injury, the bacteria then infect it causing further damage, and fungal infection can also occur.

Such holes result in osmoregulatory problems, leading to damaged kidneys and death if not treated. It is worth adding a weak salt solution to the pond as well as anti bacterial remedy, a concentration of 3gm per litter will help to restore the osmotic balance and reduce strain on the kidneys (make sure that the salt is fully dissolved before you add it to the pond).

Finrot is easily noticeable, the fins and/or tail look chewed and are red at the edges. Secondary bacterial and fungal infections can develop.