I recently upgraded Mr. Plum into a five gallon tank. He never made bubble nests and never seemed to fully enjoyed all the swimming space. Even with all the plants and hiding spots he just didn't seem happy.
I had to move him into his 2.5 gallon QT tank for some TLC from a heater malfunction and when I woke up this morning their was a huge bubble nest around the plant I put in there! When I lifted the lid to try and take a picture most of it popped and he looked so mad at me. Oops! Anyway, since he made a bubble nest (which he hadn't done since moving into the 5g) and since he seems a much happier. Should I make the 2.5 gallon his permeant home?