Fish depend on the right ambient temperature because, being cold-blooded animals, they are not able to adjust their own body temperatures. The vital functions of cold-blooded animals decrease with falling temperatures. The right aquarium temperature is therefore very important to ensure the animals maintain their food intake and guarantee a smooth continuation of the metabolic processes. Depending on the origin of the fish, the temperature they feel comfortable at, varies. With the JBL aquarium thermometer Slim you can monitor the temperature to an accuracy of 1.0C. Precise measurement Thanks to a suction cup the glass thermometer can be easily attached inside the aquarium.JBL Aquarium Thermometer Slim+ slim thermometer made from stable glass capillares+ glass capillares manufactured in Germany+ with reliable suction cup (acid and alkali-resistant)+ space-saving+ length: approx. 150 mm, diameter: 6 mm+ range of temperature from 0-50C