Hello everyone !
For the last couple of weeks, one of my Danio Rerio had this huge lump on his rear, almost like the skin has burst …
What can I do to help him out ? Any help appreciated! I've just put him aside to try to reduce his feeding ( my guess is that he eats too much)
He swims fine and is always the first to eat.
For info :
Tanks is a community 220L
All parameters are find and are stable
Posted by Bonne-Maman_