sera guide - Healthy pond fish

Cause: Injuries, e.g. by catching with a coarse fish net, transport injuries, injuries by trying hectically to es- cape (bouncing into sharp edged objects) or by terri- torial fights Treatment: page 37 Observation Mucous membrane rubbed off, skin injuries. 20 Cause: Feeling unwell, caused by unsuitable or pollut- ed water, or by not keeping the fish according to their requirements Treatment: page 37 Observation Pale colors, possibly conspicuous behavior. 4 Maintenance mistakes and intoxications Emaciated Koi with slimy skin