Planted Tank Enthusiast
Join Date: Sep 2009
Location: Seattle, Washington
I agree with the what the above poster said in regards to turning this tank into a planted tank.
That being said, I have a goldfish, and these are the plants in my tank:
Several different kinds of Java Fern
Kleiner Bar Sword
No personal experience, but from all I've heard anubius is a great goldfish plant.
These are the plants that I've tried and have been eaten or bothered to death:
It will depend on the size, type, and personality of your goldfish. Mine is an active 3-inch comet in a 29-gallon tank. He does tend to damage my sword leaves by blundering through them in his constant search for food, but it's nothing the plants can't handle.