If they are tropical minnows, a temperature between 75 and 80 °F (24 to 27 °C). If they are temperate climate minnows, a temperature between 20°C/68°F and 23°C/74°F. read more
Fresh water minnows live in river, lakes, streams, etc. as long as you don’t transfer them into water with a significant temperature difference they will be fine. If they are pets, room temperature is fine. I used to purchase them from a bait shop for my Oscar and they would live for weeks or until the Oscar got hungry. read more
How to Keep Minnows Alive Four Parts: Preparing to Get Minnows Acclimating Minnows to a Bait Container Keeping Minnows Lively Keeping Minnows Alive While Fishing Community Q&A One of the best fishing baits to use is live minnows, as fish are drawn to the movement of live bait. read more
I would first take the temperature of the shallows in your local lake or river. set your device to that let the minnows float in a bag filled with water "inside the aquarium" for 15 minutes that way they don't die of shock. remember water bag of minnows into aquarium. then let them live in the aquarium after 15 minutes. read more