Some photos of two of my dominant male Betta sp. cf. rutilans green, sparring in the early morning.
It's fascinating watching what I like to call the 'ritual display' between two males. This seems to involve a lot of flaring, synchronised swimming, and the alternating clamping and fanning of fins.
Most often this display does not lead to violence. However, in this instance there were a number of bites landed by each male on his rival.
Hailing from Melbourne, Australia, I currently keep and breed a number of species from the coccina complex.