Lately I have been having lots of fry. My filter broke on Sunday morning so I had to quickly rush the the LFS to buy a new one (Fluval 205 for those who are intersted). Any way the old filter has been lying about since then and when I went to get rid off it today I found 5 molly fry in it. They must have survived quite cold temps compared to the tank because its winter in the UK and its freezing. The fry are about 2 weeks old because they are the same size and look the same as some other fry I found so they will have been living in there for up to 2 weeks. I think thats quite cool 
lucky fry, are they back in the tank now?
