I don't have a picture of the condition, but the right leg of the dart frog becomes inflamed and probably almost doubles in size. The frog then can not bend the leg that well. Later, in about 3-4 days, a lesion develops on the leg, then it becomes almost blister like, then the frog dies about 24 hours later. This has happened to two of my darts in seperate tanks. Any idea on what may have caused it? So far I came up with an infection from a scrape, and a broken leg that was not well taken care of. Please let me know what you guys think.