Questions About Rosy Reds And Bettas

[GuppyTime12]

Hi guys and girls. im just starting this topic on information on rosy reds and bettas. i recently gave my old 5 gallon tank to my 10 year old brother and he has a really cool red betta named Cosmo, and 3 rosy reds (2 white ones and 1 orange one), and we just wanted some advice on the two kinds. We're both super noobs, so thats why we wanted some help. Thanks!