First off, I'm likely going to take him to the vet anyway.

But, one of my bigger breeder males has been having a leaky eye and when I rubbed it, thinking it was just tears, my finger was darkish red. How on earth is his eye leaking blood?? He's in a tub with a female, and there's no signs of fighting. He's got a tiny scab on his jaw but the two snuggle together and have been for months. Suggestions?