A great food choice for minnows in an aquarium is freeze dried blood worms. Another option is to simply feed your minnows tropical fish flakes or even goldfish flake food. Some minnows are pickier than others, choosing not to eat the flake food.Click to see full answer. Keeping this in consideration, how long can Minnows survive without food? two to three days Additionally, how do you keep minnows alive in a bait tank? Some buckets are lined with a foam plastic liner that helps keep bait cool in summer and insulates them in winter. You can add a small aerator and keep minnows alive for days. Just remember to change the water each day or so. Styrofoam buckets are probably the most common of the bait buckets. Also asked, how do you keep minnows alive longer? Prepare the container for the minnow. The water should be cold, as the fish need a cool temperature to stay alive. The chemicals in tap water can kill your minnows, so don’t use it to keep the minnows in. The container you are using should maintain a constant temperature, helping keep your minnows alive longer.How long will minnows stay alive in a bucket? 24 to 72 hours