Tipping the Scales
Fans of “The Godfather” know that the fate of a certain beefy family associate is to “sleep with the fishes.” The term indicates disposing of a murder victim in water, but similar terms go back much further than the 1970s. One identical reference goes back to 1836, and another all the way back to The Illiad, via a translation to “Make your bed with the fishes now…”
The term “small fry” to describe a trifling or inconsequential person or thing does not derive from fried potatoes, but more likely newly-hatched fish, also called “fries.”
The term “jumped the shark” is used to describe a television show which has peaked in quality and is now in decline. This began with a Season Five special episode of “Happy Days” in which a waterskiing Fonzie accepts the challenge of a beach rival to jump off a ski jump over a caged shark. This was considered a resort to gimmickry over stronger writing (though the show aired for five more highly-rated seasons, and Henry Winkler got to show off his formidable real-life wasterskiing skills).
Fish are indeed slimy, and for very practical reasons. Fish slime reduces drag while swimming, wards off parasites and pathogens, and even soothes open fish wounds. The slime also facilitates gas and water exchange across the skin, balances electrolytes, offers sunscreen, and in some cases gives the fish advantages over prey and against predators.
To make someone wholly believe something “hook, line, and sinker” refers to a fish which has taken the bait completely by swallowing this much fishing gear and is now very unlikely to escape.
People describing a problem drinker as someone who “drinks like a fish” should clarify that they mean saltwater fish. Freshwater fish don’t do this because it would overdilute their blood and body fluids. Saltwater fish, however, drink a lot to balance fresh water lost from their bodies to their salty surroundings, and their kidneys remove the salt while their gills pump the salt back into the water around them.
Ever wonder what happens to the fish when lakes freeze in the winter? They hang out at the liquid bottom. Ice is less dense than water, so it floats, and water bodies freeze from the top down. The water below gets denser with depth, and with more density comes slightly higher temperatures. As a result, water deeper than 1 meter won’t freeze, and lucky for the fish, this deep water is usually quite oxygen-rich. Their metabolism and breathing slow, and their body chemistry accommodates this cold, slow environment.