How To Tell What Fy Is Which?

[pie]

Whell i found about 7 babies in my top tank with all danios in it. About a month later i look in my small tank and there were 4 babies that were bigger than the first breed. They look exactly like the fist ones too. Are they danios

 

[drobbyb]

Probably mosquito fish as they are livebearers and deliver large babies. Danio fry are alot smaller and probably wouldn't survive.