Hi everyone, I am a new betta fish owner as of last week. I'm not sure if bettas are this deeply studied, but does anyone know of any good, trustworthy books or sites that explain the zoology of bettas or fresh water fish in general? I'd like to learn about his anatomy, circadian rhythms, thermostasis, chemostasis, the biology behind his behavior, and some genetic information. Are there any good sources for this? Thanks!