Oh heck yeah. But he was in an 850 gallon and I had to stand on top of a wobbly step stool for that long too. I'm shocked he clamped down. We had the biggest diamond goby I've have ever seen and he would often rest right on the mantle and it never closed on him. My luck....sheesh. Again, you can keep croceas in your rockwork higher in your tank. In the wild they don't live in the sand, they live in the rocks.