The faint black line

[frootloops]

I have a couple of 3 bar indos (1.5") .They aren't stable by the way. I have noticed that some of them have a faint black line between the 2nd and third bar. Will it still be visible when they get big / become stable?

These pics are not mine btw but similar to mine

 

[Ade]

There will be no change to that faint line as the tiger grows with size. It will look just like the first picture (assumng it remains stable) just bigger in scale.I've seen this happen to a couple of my tigers asthey grow. The line will not disapear.

 

[benzjamin13]

The lines will remain.