A five gallon is considered by many to be the minimum for Betta fish I have heard a Paradise fish can live in a 2.5 gallon a 10 would be better but a five is okay but I might be wrong and 10 gallon being the Minimum. But a 10 gallon would be the best minimum what exactly is a king Betta is it a hybrid, morph ,species. I have my male delta tail in a 10 and my female veil tail in a 20 gallon community. Looks like it might be a separate species Betta Raja it looks great not sure if it actually is a different Betta species to me I think morph or hybrid But remember Betta fish need hiding places.
Last edited by ChoclateBetta; 08-30-2012 at 06:19 PM.