Hello! Currently I own a 5 gallon single-planted and heated TopFin aquarium with a male red-and-white half moon betta; this is my first time owning a betta! I've done plenty of research into betta care and tank setup, and I only have a few questions that I couldn't find the answers for. My little betta (named Apollo) is active and is eating, but hasn't begun to build bubble nests, and he likes to swim towards the very bottom of the tank. I always read that male bettas would build bubble nests over periods of time and swim near the surface; could something be wrong? I'm absolutely in love with little Apollo, and it would be devastating to lose him so soon. The aquarium's nitrite, nitrate, and ammonia levels are at 0 ppm, and the pH is at 7.2. I only feed him small betta pellets from Tetra; I plan to give him weekly bloodworm treats. Have I been doing anything wrong?