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.
Bumps inside the upper lip can also be caused by injury if the mouth area is jarred. The most common cause is a mild infection within the mouth, explains MedlinePlus. Canker sores typically develop in conjunction with viral infections and are considered a form of mouth ulcer, indicating problems within the body's immune system.