I have a 2 foot Arowana and been wanting to get a tank mate. I found a 10 inch flower horn. Can I keep a 10 inch flower horn with the Arowana? Or will they fight?
How big is the tank?
Flowerhorns are generally not tolerant of tankmates regardless of species, so if it were me I wouldn’t risk it.
I’d sooner go for more placid fish like silver dollars or catfish too big to be eaten.