Can a flower horn live with a red tail catfish?

[goku]

I have a 3.5feet× 3.5 feet square tank(should be around 85-90 gallons). Plan to keep a baby male flowerhorn(3 inch long)in it. I have 2 baby red tail catfish measuring 2.7 and 3 inches. Can I keep the three together for about 1-2 months while my outdoor pond is ready? Temperature of tank will be around 27°C. PH-7.
Will the flowerhorn fight with the red tail?
There will be no other tank mates. The red Tails aren't aggressive at all and too small to be able to eat the flowerhorn.

 

[V227]

I'd say the chances are good if you stock the catfish first and let them establish themselves. Provide plenty of hiding spots. Every fish is different. Your FH might be a terror, or might end up being a community fish like a Kamfa I used to own.
Hope you're digging a big pond. Lol.