In the scientific method, Occam's razor is not considered an irrefutable principle of logic or a scientific result; the preference for simplicity in the scientific method is based on the falsifiability criterion.
Many freshwater fish average about 1 to 3 years of life. Some of the more popular species with this short life span include fantail guppies, swordtail platy, mollies, rainbow fish, hatchet fish, corydoras catfish, some cichlids, rasboras and tiger barbs. There are also several fish that live around 3 to 5 years, with proper care and feeding.
Â· just now. Report Abuse. Actually, the average lifespan of a goldfish is about 15-20 years. 7 years is under care, but not the greatest. Most dont even make it to a year because people are idiots. know the average lifespan for a household goldfish is about 7 yrs, but is it shorter for a fish that has been in a tank with about 50 other fish and has to fight for its food? Update: its in a little fishbowl.