Save water from a water change in a bucket. Put in away in your laundry room or somewhere. Check it in about four, maybe, five days. You may find some tiny dots attached to the sides of the buckets. After a couple more days, look for tiny black dots with tails scooting through the water. Sounds crazy, but I have several long finned danios that I raised that way. Try it! Send me a PM and let me know how it turns out.