Male betta fish tend to be more aggressive. They set up territories that they defend with their lives. When another male betta is introduced into the tank, the original male will start to display warning signs. These warning signs include flaring their gills and spreading out their fins in an attempt to make themselves look like a serious threat. Israeli soldiers on patrol in the Gaza Strip. Hamas, the group which controls the Gaza Strip, has ruled out any more hostage releases until Israel agrees to a "full cessation of aggression Betta fish are aggressive because they compete for social rank in their natural environment, which allows them to hoard food and have access to females. Although it sounds strange, this is very important for the species, since without these resources the specimens would be unable to reproduce and leave offspring. There are so many variations that betta fish are usually classified by their colors, patterns, and tail type. Their aggressive behavior is often off-putting for newcomers to the hobby. However if properly fed and cared for, you shouldn't have any problems. gKnHq.

which betta is more aggressive