Bacterial cold water disease

Fish infected with the pathogen Flavobacterium psychrophilum experience tissue erosion, jaw ulcerations, inflammation, and behavioral issues.

Other symptoms include the skin of the jaw "ulcerations",[7] pale in color gills, increased mucus production, blindness, inflammation of the gastrointestinal system, and behavioral issues such as "spiral swimming".

[2][4] In rainbow trout fry syndrome, acute disease with high mortality rates occurs.

[6] [2] This bacterium was first reported in 1922 at the Fisheries Biological station in Fairport, Iowa and it has undergone many taxonomic revisions since then.

[2] In addition, removing the diseased fish from the area is important in reducing the chances of spreading the bacteria within the environment.

In addition, producing UV light[11] Iodophor disinfection of eggs just before hatching has been recorded as a sensible way of minimizing egg-associated transmission risks.

[11] If the disease is caught at an early stage, diagnosing BCWD accurately by a veterinarian is important for not only the fish's existence, but its environment as well.