Can Galaxy rasbora Live With Zebra danio?

This is close to the exact pairing the celestial pearl danio's own profile warns about: a larger, more boisterous tankmate that outcompetes it for food and leaves it too intimidated to show its colour. A zebra danio, fast, gregarious and more than twice its length, fits that description.

Water is not the problem: 20 to 25 °C and pH 6.5 to 7.5 suit both.

If you want to try it, stock heavily on the celestial pearl danio's side, twenty or more rather than the bare minimum of six, since larger numbers spread the zebra danios' attention and let the shyer fish hold its ground. Feed in more than one spot so the danios do not simply out race the smaller fish to every meal, and plant densely with broken sightlines. A tank under the celestial pearl danio's own 41 litre minimum is not the place to add a second, faster shoal.