So recently my dwarf Gourami has been collecting all the pieces of floating plants and other leaves that have fallen and placing them in a floating pile. And while I appreciate it because now there aren't a lot of pieces of riccia floating around, he's starting to dismantle the riccia that i've tied down to rocks and dw. Actually, two rocks and a part of drift wood are already bald. I'm assuming that he's building a nest in a similar way that bettas make bubble nests. Is this a seasonal thing or will this always happen as long as he's happy?