Calling all nemsperts - perfectly normal looking RBTA been in my tank a month or so. 2 days ago started walking but I corraled him into a floating basket all yesterday which ROYALLY ticked him off. Last night I tried placing him on a high rock and he latched on immediately. I fed him a small piece of krill which he ate quickly. All good today, looking beautiful when I got home then I cooked supper and 30 minutes later this - he's thrown up all his guts and looks like a giant gaping stab wound in the center???! Splitting??? Dying???