Do Beta's prefer the light or dark?

[brwnidgrl15]

thx all im buying a thermometer asap
also wat kind of face does ur beta make while making popping sounds?

[bettababy]

Honestly I must say, I've never paid much attention to any possible changes in "facial expression" because fish don't have facial muscles like people do, where they can control expression outside of moving the eyes and opening the mouth. If you watch, you will probably see your fish appear to bite at the water's surface or take in air, which is what causes the sound.

[Blaxicanlatino]

the fish just makes a plain neutral face. They begin to gain personalities and socialize wit owners!!! 8)