My Yellow belly slider has patch of skin missing on neck.
I have 3 turtles all together...2 RES 1male 1 female and 1 YBS female i think...but my YBS has patch on the neck behind its head i know for SURE its not a fungus its like the black skin simply peeled off to white skin it also has faint blood spots in the white patch like 2 or 3. my tank set up is decent not the best but decent i have 55 gallon tank or bigger (not sure) i have 30-60 gallon heater and 10-20 gallon heater 30-60 gallon filter and 10-20 gallon filter. i recently changed basking area cause they really couldnt get completely out of water so i made my own above tank basking area and they DO NOT use it i dont get it its frustrating any tips on how to get them to use it would be helpful and appreciated. also the above tank basking area has been in tank for about a month. my lights are exo terra uvb 100 its compact fluorescent bulb 23 watt (pretty sure its older than 6 months though) and i alternate exo terra daylight basking spot bulb 50 watt during the day and at night i use exo terra night glo 75watt. but my main concern is frankie (YBS) need to know if its harmless or harmful normal or ab-normal pleas and thank you ill work on pictures if necessary.