Hi So 3 weeks ago I tried to hatch 2 glowlight tetra eggs two weeks ago not knowing they would hatch. Eventually one died and the other one ive been keeping in a small 10 ounce container(with plenty of java moss as its primary food source) floating in my ten gallon. I made the mistake of accidentally leaving the heater out twice before in those two weeks (wont happen again) and there was a 5 degree temp drop, yet that fry survived it. So i assume that it is pretty hardy and i was thinkingof putting it in my unheated 1.5 gallon tank. The tank has been established for over 8 months and has a bunch of cherry shrimp fry as well as seed shrimp. The temperature fluctuation is from 74 -79 degrees daily.