I have some swordtail fry that were born two days ago. How fast do they grow? When will the mom have fry again? Anything else i should know would be great. They are in a two gallon tank and there are less than 20 the most that i have counted at a time is 17 and there are no guarantees that i didn't count one more than twice or miss some. I am feeding then fish flakes that are very very tiny. I am going to go buy some brine shrimp this week. i have changed about half of the water every day since they were born. I also have two rainbow platy, two mollies, two fancy guppies, a newt, a pleco, and a white catfish type thing.