your betta looks exactly like the one me and my wife have. the tail reminded her of a roman soldier's helmet (the plume) and thought a romanesque name would be fitting, so she named it napoleon...unfortunately, the name to me reminds me of the famous Napoleon and i think he was french or something...oh well...good enough we said! lol
You're lucky you found such a place! And you got a beautiful betta out of them! Congrats!!