Symptoms
Beginning as small pits around the fish’s eyes, light colored lesions then develop along the fish’s lateral line system, onto the body and sometimes onto the unpaired fins. Rarely fatal, it does cause disfigurement, making the fish less suitable for public aquarium display. At least 20 families of fish have been identified as having developed HLLE in captivity. Not all species of fish show the same symptoms, and do not always develop lesions to the same degree (Hemdal 2006).
Read more about this topic: Head And Lateral Line Erosion
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