Lost my Brazilian Golden Moroh eel las week. Someone mentioned to me it got stung by an urchin. The best I can figure is it went into a rock got stock by the urchin and when it pulled out got a dose of its venom. Too late for this situation, but is it best practice to keep urchins out of an eel tank? I have never heard of this before but after doing some research online it appears other people have had the same experience.