70-85 degrees F
Mercury
To determine if the temperature in your tropical fish tank is too hot, check the ideal temperature range for your specific fish species. If the temperature is consistently above this range, it may be too hot for your fish. Adjust the temperature accordingly to ensure the well-being of your fish.
Guppies are pretty hardy fish, which means they can survive in a wide range of temperatures. I would suggest anywhere between 72 to 78.
Body temperature is the best but it will grow in a wide range of temperatures.
Stenothermal describes an organism unable to tolerate a wide range of temperature and Eurythermal describes and organism that can tolerate a wide range of temperature.
Fish should be received at an internal temperature of 32°F to 41°F (0°C to 5°C). This temperature range helps ensure the fish is fresh and safe for consumption. It is important to check the temperature upon delivery to maintain food safety standards. If the fish is above this temperature range, it may indicate improper storage or handling.
Cheap and rigid industrial temperature measurement over a very wide temperature range.
The temperature range of a mercury-in-glass thermometer typically ranges from around -38°C to 356°C. Mercury expands and contracts linearly with temperature changes, making it suitable for a wide temperature range.
Cold to a certain degree (no pun intended). Plecos can withstand a pretty wide range of temperatures as long as it is a stable temperature and if different from current slowly lowered. They do best however at around a 76 - 80 degree F range.
warm blooded animals- mammals and aves
Water temperature in the aquarium should be kept in the 75-80 F range.
Mostly because it is a liquid over a very wide range of temperature.