Jake Allgeier studies fish urine. I guess someone has to. He says that there's a lot more of it than you would think, and it's a lot more important for marine environments than people realize. From redandblack.com:
"A funny comparison is if you take the biggest ungulate herd — so that would be bison, antelope, deer and elk — in Yellow Stone National Park, per meter squared — so per unit area — the fish on one of the reefs that I look at...they actually pee more than three times more [than that herd]," he said. Fish urine even dwarfs fertilizer-heavy golf course runoff — per meter squared — in nutrient content.
Mrs. Keyte of Blockley, Gloucestershire had a pet trout that would eat worms from her hand. When it died in 1855, she erected a tombstone in its honor. That tombstone remains one of the most popular tourist attractions in Blockley. And it's perhaps the only tombstone for a trout in the world. [National Geographic, 1917]
When these 3 to 5 foot catfish in France senses some motion on the shore, they have adapted their behavior to catch pigeons for dinner. They actually come onto the shore to get the birds. Here's a video of a successful catch.
According to the Public Library of Science, the fish have a 28 percent success rate, which is way better than any hunting or fishing I've ever done.
Scientists are studying a relatively new and unusual species of Vietnamese fish. Phallostethus cuulong carries its genitals on its head, both males and females. They also copulate because the the eggs are fertilized inside the female rather than after they are laid as many other species of fish do. Smart evolution, joining in the the fun part of reproduction!!
George Middlebrook was a Caribbean shark fisherman who made a pair of shark dentures for himself by taking a wax impression of his mouth, transferring the impression to wet sand, pouring hot lead into the impression, and then inserting shark teeth into the lead. (Google News link.) I wonder if he could actually chew with them? Because of his teeth, he was given a small role in the 1956 movie The Sharkfighters.
There's a site for every fetish, and if your fetish happens to be watching people swallow live goldfish, then check out goldfishswallowing.com. From their site intro:
Welcome to GoldfishSwallowing.com
Our website offers hundreds of videos of beautiful girls and tight men swallowing whole, live goldfish, tetras, bettas, sharks, and other aquatic creatures. Other small items, like diamond rings, wedding bands, sockets, and pretty much anything else that can fit down a throat, can also be seen within our pages. With the largest swallowing archive anywhere on the Internet, you will definitely find what you're looking for, and we are certain you're going to love it!
Millions of people around the world enjoy Goldfish Swallowing, enough so that the swallowing of live creatures actually has its own scientific name (vorephilia). The resources dedicated to this passion are few and far between, and the ones that exist are somewhat sketchy. Goldfish Swallowing, the website, is a common, safe place for people to come together, talk about the activity, and watch videos of others gulping down live fish.
Their sample videos all are safe for work (unless, maybe, you work in an aquarium). Which is to say, that although the site may superficially resemble a porn site, that doesn't seem to be the case -- i.e. no nudity. It's just good-old, wholesome fish swallowing.