thank you will consider your valueable suggestion and will buy an adjustable filter within two daysSo from math I just did your ambient temps will run from 62-75 degrees fahrenheit. This temp is too low for most of those fish or at least the bare minimum for these fish. I recommend an adjustable heater so you can better regulate the tank temp during warmer and colder weather.
Neon Tetra 70-81
Zebra danio 65-75