While they are skiddish, especially at feeding, they come out. Hiding in the corner suggests flukes or other ailment- I cannot see video but can you describe:
Breathing- normal or labored ?
Eyes - clear or cloudy?
Is it eating?
Any abnormalities on its body?
Hello, thank you for your reply. Unfortunately he did not make it through the night. Before going to bed everything looked normal besides a slightly elevated breathing pattern and the fact that he would just not leave the bottom of the tank.