2016-12-16T09:26:42-05:00. A because when the little fish die they sink to the bottom, and after time the skeletons build up on top of each other.
How do you get a cyst inside of your lip? A white bump or mucous cyst forms on the lip when the salivary glands get blocked. This is caused by any trauma to the oral cavity due to cheek or lip biting, poor dental habits, or piercings, states Healthline.
1 These bumps are normal structures like openings of minor salivary gland or oil glands that are found on the upper lips and cheeks. 2  Mucoceles may also be found on the inner side of the lower lip.  Causes. A bump inside your mouth may be caused by burning after drinking or eating something that was too hot.