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).
Cold water fish do better in temperatures well below that, some of them enjoy water well below 70Â°F, which is not suitable for any tropical fish. Ultimately the best temperature will depend on the species of fish in the aquarium.ater Changes. A simple water change can impact the temperature significantly, depending on the tank size and volume of water changed. Small water changes are always preferable to large changes, and the temperature of the water used should be tested to ensure it closely matches the water temperature of the aquarium.