Leo has had these lumps for a really long time.
He had tail rot as a baby (got him at 3months), and was treated with Betta fix for a long time (it wouldn’t go away).
He’s had these lumps on his tail for a long time, I thought they were just folds but now that he’s full grown you can see them easier.
They don’t seem to effect him, his tail has continued to grow, he’s still playful (he comes when you call his name, super cute), and he eats normal.
The blue started showing up when we moved across the US (he traveled in a half gallon between my feet, we did it straight shot, left at night and arrived the next night). So I’m not sure what that is either but since he acts healthy I assumed it was part of him maturing or caused by stress (we moved when he was 8 months old).
He’s very in touch his his feminine side and will show us his stripes when stressed (and doesn’t do much flaring) so I don’t think it’s hurting him.
(He’s a crown tail, but the fin rot has prevented it from being all that obvious.)