I have a poor lonely solitary giant danio with little room to swim and no companions, so I would like to get some more and move them into a 120 gallon with 2 common goldfish and a common pleco. However, i hear they need 72+ degree water. Does anyone know if they will be ok at around 70? Zebra Danios are good in cooler water, so I was hoping that maybe 72 was just a generalization since giant danios are considered tropical fish.