After we had secured the fish home, we ventured to the sketchiest fish shop in Chinatown, NYC, and picked out a lovely little betta. We named him Breakfast -- because breakfast is the most important meal of the day, and Breakfast is the most important fish in our hearts.
We opted for the multicolored gravel, because we felt like getting "blue for a boy," per the salesman's suggestion, was a little too heteronormative and we don't want to pigeonhole the kid before he even loses his baby flippers. But you can do whatever you want. We also bought him a decorative skull to remind Breakfast of his own mortality, and the inevitable reckoning all fish slowly swim toward.