Inspired by Bacon Ipsum, Tuna Ipsum makes your lorem ipsum text altogether fishier. There is also a free WordPress plugin available to download, which you can use to make your own dummy text generator:

“Moonfish, steelhead, lamprey southern flounder tadpole fish sculpin bigeye, blue-redstripe danio collared dogfish. Smalleye squaretail goldfish arowana butterflyfish pipefish wolf-herring jewel tetra, shiner; gibberfish red velvetfish. Thornyhead yellowfin pike threadsail ayu cutlassfish.”