Definition. How the range is identified; made up of the cell in its upper-left corner and the cell in its lower-left corner, separated by a colon. Term.
As an average, a tropical fish tank should be kept at around 26-27 degrees Celsius (79-81 degrees Fahrenheit).This is NOT by any means set in stone though however this temperature range covers the most tropical fish at a comfortable temperature.s an average, a tropical fish tank should be kept at around 26-27 degrees Celsius (79-81 degrees Fahrenheit).
A heater may be used to maintain water temperature in your aquarium. Most tropical fish require a constant water temperature between 75Â° and 80Â° F. Goldfish and certain other cold water species are the exception to the rule.They can exist quite comfortably without a heater. heater may be used to maintain water temperature in your aquarium. Most tropical fish require a constant water temperature between 75Â° and 80Â° F. Goldfish and certain other cold water species are the exception to the rule. They can exist quite comfortably without a heater.