I highly suggest finding the time to research before you decide upon anything. Here is a good place to start
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So, yes,
most will be fine together. Some of the larger tetras may not get along with certain danios (longfinned, giant, etc.) and some giant danios may not get along with certain tetras. The "normal" danios - zebra, leopard, pearl, gold - will be fine with most small tetras.
However, Froggy has implied that these may be for an 8 gallon tank....so this combination is not a viable option. In fact, danios are incredibly active and it is often suggested against to put them in a 10g tank. Partly because they appreciate more room and partly because all their movement can look "messy" in a smaller tank.
You could fit a small school of tetras in that tank (it isn't a weird shape, is it? Like a hex?), such as cardinals, neons, glowlights. Maybe 6 of them.