Since my injured goldfish started recovering (see here http/www.fishforums.net/index.php?/topic/361266-help-please-badly-injured-goldfish/page__p__3010586__fromsearch__1#entry3010586), one of my young goldfish (still black) has gone insanely happy and it all culminated with him triumphantly sticking his fins up, blasting out of the water and knocking himself stupid on the light. I set up a quarantine tank straight away and transferred him to it the temperature is now 25c after using a tank heater to warm the water up. Is there anything else I can do for him? Just to let you know, he is lying at the bottom of the tank (upright), breathing very slowly and hasn't moved since i put him there.