Anyone else have fish that definitely exhibit growth spurts??? I’ve seen it with other fish, but my newest example, is I’ve had some sterbai Cory’s in my South American tetra tank for over a year, but in the last few weeks, they have become more active, and almost doubled in size… absolutely no changes to the tank, and no new fish added… curious what could cause that in a fish that’s been in the tank for over a year, with no changes made???