how long can a betta fish live with swim bladder diseaseDuring the choice system, matched for size males are paired in small tanks for staged fights. Fights can last a couple of hours and after resolution fighters are discarded and the siblings of male winners are chose for breeding. Breeders try to enhance the combating lines by cross breeding varieties that have precise morphologic and behavioural traits but the alternative method is concentrated in the fight outcome and not on behavioural displays. In a prior study, the male aggressive behaviour of domesticated and wild type B. splendens was in comparison using a mix of mirror and video playbacks tests and live conspecific shows . The authors showed that effects were context based, with modifications in aggression between wild type and short finned domesticated types effects from a fighter and fancy short finned diversity where pooled together to increase sample size detected during live conspecific trials but not when using mirror/video playback tests.