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My turtle's belly shell is yellow. What is it and how to treat?

Updated On September 23rd, 2025

Ho I have a short neck murray river turtle I noticed today when i got him out to clean tank he has some yellowish stuff on his belly side of its shell What could this be and how do i treat it

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2 Answers

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Answered By Dr. Strydom, DVM

Veterinarian

Published on August 28th, 2017

Looks like ulcerative shell disease which is often called SCUD or 'shell rot'. It comes in two primary forms. The dry form is often associated with a fungal infection and the wet form is often associated with gram negative bacteria (and usually develops after an injury to the shell). This looks to be the dry form. Treatment consists of cleaning the area with a diluted Betadine solution (1 part betadine to 10 parts water). Put it on the affected areas, let it sit for 5-10 minutes and then rinse thoroughly. I would do this twice a day. Also dry docking for 4-8 hours a day is strongly recommended. Go over all your husbandry carefully - ie: water quality/chemistry, lighting, diet, etc. as usually this is a husbandry issue. This article is very informative. https://www.amazingamazon.com.au/murray-river-turtle-care-short-neck-turtle-care Hope this helps. Best wishes!

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    Answered By Miranda Sadar, DVM, DACZM

    Veterinarian

    Published on June 21st, 2018

    A reddened shell can be due to trauma, but it can also be due to infections in the body, called sepsis. I think that you mentioned previously that you had been to a veterinarian recently - I would recommend that you contact them, and see if they would be willing to fill a course of antibiotics for you. This would incur a cost, but if they have seen Cooper recently, they may not require an exam for this, so that would save you some money. However, I don’t know if they would feel comfortable in doing this, so you would need to ask them. Otherwise, please ensure that the husbandry and water quality are as good as possible, because contaminated water can have excessive amounts of bacteria which can lead to infections.

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