Updated On October 25th, 2018
Pet's info: Amphibian | Unknown - Amphibian | Male
Answered By Todd Cecil 239
Veterinarian
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Thanks for reaching out about Bolt and including photos. Shell color changes front items in the water are rarely a problem unless toxic. Algae can often change the color greenish. The white line is not noted on the photos but can sometimes be a growth line or residue from hard water (mineral deposits). Trying to prevent contaminants from falling into the pond will help. Maintain good water quality, offer a well rounded diet and plenty of sunlight (natural is better than artificial) and seek a veterinarian if your concerns continue. Good luck.
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