Fish makes swaying or twisting swimming movements

Choose one of the following:

Bacterial infections

  • whitish film often appears on the fish's skin
  • bloodshot spots
  • or entirely different symptoms may also be observed

Swallowing air, headstand symptom

  • the fish float to the top or struggle not to float to the top

Whirling disease

  • black coloration of the tail area
  • whirling movement around the body's axis
  • deformation of the skull and spinal curvature