I'm working a new job that requires me to commute 1 1/2 hours one way. I have to leave the house at 6. Since the aquariums are in the bedroom that we share with our son (yes, we are living in a 1 bedroom apartment), I don't feed the fish before I leave. I've asked my husband to take over the morning feeding. He told me he grabbed the container of flakes (which my female absolutely LOVES - but usually only gets for a treat) and fed them both. He said the Fishy (the female) was super excited and gobbled them up right away. But when he dropped the flakes in for the the Fizz (the male), Fizz swam to a corner at the bottom of the tank and sulked and wouldn't budge no matter what my husband did. So my husband scooped out the flakes and decided to drop in a couple pellets. Fizz immediately swam to the top and gobbled them up!
My husband was amazed how picky these fish can be and how they know the difference between what foods they are getting.