Yesterday I bought a male crowntail betta, and I love him! I named him Mako. Here are some pictures of him, sorry they're kind of fuzzy.
Thanks!Hi, welcome to the forum
Your fishie is beautiful. However he really needs a heater and more room to be truely happy. His water should be around 78F. If it is too low you will notice he will be sad and not want to swim around very much due to the cold. It's recommended that you find at least a 2 gallon set up for him, since it'd be easier to heat. He'd love more room as well. For now I'd recommend taking either the plant or cave out to give him more space <3