Had this castle and then saw the bigger one that had openings in it. The fish can swim through the openings in the larger one, where as this one is just for decoration, no openings to swim through. Took this one out and replaced with the bigger one. If your tank has room, I would suggest getting the one that the fish can play with and hide from one another in.

Pros: great looking

Cons: cannot swin within

Love this product. Great theme for an underwater tank and also gives your fish something more stimulating to look at (rather than just gravel!)

Pros: Adds a touch of style to your tank

Cons: difficult to clean