Not only my fish love it i love it too. This was in my goldfish tank and now its in my betta tank. My betta goes in and out of this alot, he hangs out in it. He loves it. if you have good matching rocks this looks great, heck it even looked great when it was in my goldfish tank with dark blue rocks. I really recommend getting this. For something this big its only about $15.05 ( thats with tax in GA ) Most of the time things this big cost around $ 21.05 This is quiet large! I love it.