Head and Lateral Line Erosion (HLLE) Courtesy of : Mark Martin/blue zoo
The condition referred to as head and lateral line erosion (HLLE
) is different from the above ailments as it is a non-pathogenic ailment. A tang afflicted with HLLE
will present with pitting and scarring along its lateral line and on the head. Fading color is also quite common. Like hole-in-the-head disease, HLLE
is not very well understood, but it is our experience that it is often related to malnutrition or prolonged exposure to hypo-saline conditions. Stray electric current (e.g., from faulty power-heads) is also sometimes believed to be the culprit.
There are many other suspected causes of HLLE
, and because the causes are not well understood, effective treatment can be difficult to nail down. Here is what we suggest:
· Insure water quality is high and stable
· Use a supplement for synthetic saltwater such as Kent Marine’s Essential Elements
· Insure a varied and nutritious diet (using a vitamin supplement like Selcon) is being offered
· Reduce the amount of chemical filtration (if any) on the system, especially activated carbon
· Remove any potentially faulty power-heads, heaters or other equipment that could be releasing stray voltage into the aquarium
will not lead to death, but rather it will result in dis-figuration and, ultimately, discomfort to the animal necessitating euthanasia. If you observe the signs and symptoms, act quickly.