[tanto20]

Hi i’m hoping for some advice please. Two pictures below.

This Gecko is about five / six months old and about a month ago we noticed this black line across the underside of the side of his jaw. We immediately inspected him and put him in his own tank (he was in with 2 others same age). We thought maybe it’s an infection or something but it hasn’t changed in the last month. Doesn't appear to bleed or be flaky. Also he still seems to be eating fine and behaviour wise no problems. I’m almost starting to think this is just an odd part of his pattern.

Any thoughts please?