Symptoms of Lethargic Pond Fish

Lethargic goldfish or koi is an indication some infection has infested your pond. It is important to know and recognize the symptoms of the various afflictions that can affect your pond.

  1. Ick

    • Ick, the most common of fish disease, appears as small white spots on the scales. Symptoms of this infection include lethargy and lack of appetite.

    Costia

    • Costia are tiny parasites that eat away at the gills and the scales. Symptoms of costia are lethargy, no appetite and excessive production of slime.

    Trichodina

    • The parasite Trichodina appears like a wagon wheel on the scales. Symptoms include lethargy, a gray film and floating near the surface of the pond.

    Chilodonella

    • Chilodonella is very much like costia but lives at colder temperatures. Once again, fish with this type of infection will be lethargic.

    Flukes

    • One of the most deadly parasites is the fluke. Common symptoms of fluke infection are torn fins, lethargy and gasping for breath at the top of the water.