My fry have now been hatched for a week and grwing rapidly, there in an outside tank, and some mosquitos have decided to lay eggs in me fry tank.. Can this be a danger to the fry?? And i cant take them out because evrytime I try i end up with one larvae mosquito and 5 fry. So its almost impossible since I never expected so many fry somewhere around 2-500.. How long until they will have to be separated? And when can I start telling the difference between male and female