The term cognition is often incorrectly used to mean cognitive abilities or cognitive skills..
The best water temperature for betta fish is around 74-78 Fahrenheit, or 23-25 Celsius. Your betta will generally be fine if the water temperature is slightly out of this range (72-80 F), but 74-78 is what their natural habitat of rice paddies in Thailand and other southeast asian countries contains.lightly warmer water temperature for Betta fish (80-82 F) can be used if your betta is sick and needs to be quarantined or separated from other fish while he is being treated with medication.
1 A five-gallon (or larger) fish bowl, tank or aquarium. A betta fish can live in a bowl as small as one gallon, but it is not recommended. 2  Food in the form of pellets and insects.  A thermometer to read the water temperature.