Black phantom tetras vs Red phantom tetras

[Solstice_Lacer]

I know they are different species, but I'm wondering how similar or different their care is. I saw one source suggesting red phantoms prefer slightly cooler waters (low 70s). But I've probably seen more info about black phantoms overall, much of it suggesting they are happy in similar ranges. I want fish to thrive, not just survive, so I appreciate any advice.

[Intuos]

I have both in my 34g tank which is set at 77f and both are doing well and generally always swim around the tank together.