sera guide - Healthy pond fish

18 2.8 Diseases caused by crustaceans 2.9 Multiple infections Diagnosis: Multiple infection (a differentiated diagnosis is usually possible only by a specialist) Treatment: page 35 Observation Clearly segmented, oval, opaque, yellowish to brownish arthropods [1 – 5 cm (0.4 – 2 in.)] are attached to the fish; bloody, dot-shaped sting marks. Diagnosis: Parasitic isopods Treatment: page 34 Observation Strong mucus secretion, often with fungal infection in some areas, numerous other symptoms possible. Goldfish with multiple infection Parasitic isopod