I found one of my baby RES today with some red liquid around him, and I'm afraid that it's blood. I've attached a picture of it here. I'm really worried, and any advice on what I can do to heal him would really be appreciated. He has been sluggish for a while, and while he bites at food, he seems unable to eat even the smallest pieces. I am feeding him baby Reptomin pellets that I cut in half, but while he is able to get them into his mouth, he ultimately spits the whole thing out. This has been going on for a while, perhaps up to half a month. I recently moved him from a tank with multiple other turtles into a tank of his own.
The water temperatures are kept at about 82 degrees, and he has both a basking area (he's sitting on it in the picture) and UVB lamp that are turned on for about 10 hours a day. Please help!

