Does anyone care to comment on the plus and minus of congo versus emporer tetras? I am looking to add a new variety to my 55 gallon planted tank (lots of hiding places and canopy of plant cover). Right now I have a pleco, 2 black neons, and 9 cory cats (4 are tiny babies right now). The tank has been established for 4 years.
I want to know how each breed does in relatively harder alkaline water as I live in southeast Tennessee. Also how will they do with the types of fish I currently have? Also my cory cats spawn with regularity and how predatory are either of these tetras toward smaller fish?
In the past, I had a gold gourami who was aggressive toward cory and I don't want them terrorized again.
Thanks for your input!