This video posted up by an “internet buddy” of Nat Tarbox goes to show why I hate crabs for aquariums. In the video you’ll see Mr. Crab walk around, become curious of the camera and as Nat points out, around the 1:50 start to turn mean. This in a nutshell is why I hate crabs. They are mean. They look cute and nice, but they are evil and will eat your fish and pick and then kill your corals for fun.Â I’m not sure who decided that we all need crabs in our aquariums. I’m sure it was someone selling us on the fact that they help with “scavenging” the leftover food and what not. But I am one that refuses to have any crabs walking around on my aquarium sandbed. The only crabs I like, are ones severed with butter from the New England area. Do you have crabs in your aquarium?