Definition of theory. plural. theories. 1 : the analysis of a set of facts in their relation to one another. 2 : abstract thought : speculation. 3 : the general or abstract principles of a body of fact, a science, or an art music theory.
Studies have also shown that those Betta Fish which live in larger tanks will probably live much longer than those who are cooped up in smaller tanks. In fact, if you are purchasing any tank you should always purchase the largest that you can both afford and fit into your room. This is going to benefit all of your fish. Hopefully this has been of some use to you and provide at least a couple of answers as to how long does a betta fish live.
Lionfish, an invasive species native to the South Pacific and Indian Ocean, have been wreaking havoc on the Caribbean and the West Atlantic, decimating native fish populations from Cartagena to North Carolina with their voracious appetite.