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.
Since the mid-2000s, lionfish reports have increased rapidly. As of 2010, they have even begun to show up in areas where lionfish previously were not found such as along the northern Gulf of Mexico off Pensacola and Apalachicola. Movement of lionfish likely followed currents up the Atlantic Coast, around to the Bahamas and then into the Gulf. Images courtesy of USGS Lionfish have been found in shallow waters and in depths up to 1,000 feet and in temperatures as cold as 48 to 50 degrees. Although they have been found as far north as Rhode Island in the summer, they do not survive the winter there. They can survive low salinities for short periods of time. Impacts. Lionfish are a predatory reef fish.