No, goldfish do not eat decor (unless it's a real aquatic plant, when it comes to those they will shred it to pieces). Over time, they may constantly peck at it, which is just a sign that they're looking for algae to eat (goldfish LOVE algae), but it dosen't do any damage to the decor.
Female goldfish are slightly bigger than males
the girl is bigger
basicly one that is not very predatory and one that isn't a cannibal. just to be safe make sure it a female that isn't bigger than it.
Female goldfish are usually bigger than male goldfish.
goldfish The largest goldfish is hundreds of times larger than the largest guppy.
Yes a lot bigger.
It depends on the size of the bird and turtle.
whale
anything bigger than it
terrapin can grow bigger than a moss turtle.
It all depends on height. If both your goldfish are around the same height they might be playing. But if one of your goldfish is bigger than the other by 2 or more inches (or even by a long shot) the bigger one is bullying the smaller one.
A little bigger than a quarter.