goldfish rulz!
As a kid I was not a good candidate for looking after pet fish and ended up inadvertently subjecting them to unusually difficult conditions. I'll spare the (now embarrassing) details, but goldfish are real survivors.
A cunning goldfish, which was delivered into an aquarium as food for its main inhabitant, the Arapaima, managed to avoid being eaten and instead survived for seven years in a filtration unit. The survivor was apparently discovered by staff at Japan's Shima Marineland during a routine cleaning out of the filtration unit, …
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The goldfish was in the large unlit filtration /tank/ under the main tank. They clean it once a month, but it's huge, 3m x 5m (don't say how deep), and dark. Apparently this guy just hung out away from where the cleaning was going on. But this time, someone thought he saw the shadow of a largish fish moving in the darkness (which must have been a fairly AHHHHHHH moment). And when he went looking with a flashlight saw this guy just hanging out down there.
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they had no idea the fellow was living insider
Reminds me of Vic and Bob putting things in cider.
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And a sushi knife.
I never heard of koi sushi so I thought maybe they don't taste good. Turns out that people don't eat any freshwater fish due to the risk of getting parasites. The Wikipedia page on raw fish dishes says:
Traditionally, fish that live all or part of their lives in fresh water were considered unsuitable [...] due to the possibility of parasites
I never knew this but now it makes sense to me that certain fish like mackerel (aji, saba), eel (unagi) and maybe others that are commonly seen on sushi are always cooked first...
"Turns out that people don't eat any freshwater fish due to the risk of getting parasites"
I take it you meant "Turns out that people don't eat any freshwater fish raw due to the risk of getting parasites"? Freshwater fish such as Tilapia are staples across much of the world.
...on the last paragraph, "The Canadian province of Alberta has almost declared the critters an invasive species as so many of them seem to have survived being flushed down the lavatory and currently infest the region's storm drains"
1. Fact check: lavatories aren't connected to storm drains. If they were, every river would be an open sewer, and imagine what river mouths would look like.
2. If that last statement was supposed to read "...infest the regions sewers" that's even more unbelievable because the only things that can survive in a sewer is bacteria. Goldfish may be tough, but there's NO WAY they are going to survive in raw sewage.
3. Sewers (and storm drains) are not closed, static systems - they lead somewhere: rivers (and the sea, eventually) in one case and treatment plants in the other. Goldfish can't survive in salt water, either, and (depending on the treatment process) I doubt it's likely the sewerage farm will do them any good.
...on the last paragraph, "The Canadian province of Alberta has almost declared the critters an invasive species as so many of them seem to have survived being flushed down the lavatory and currently infest the region's storm drains"
1. Fact check: lavatories aren't connected to storm drains. If they were, every river would be an open sewer, and imagine what river mouths would look like.
2. If that last statement was supposed to read "...infest the regions sewers" that's even more unbelievable because the only things that can survive in a sewer is bacteria. Goldfish may be tough, but there's NO WAY they are going to survive in raw sewage.
3. Sewers (and storm drains) are not closed, static systems - they lead somewhere: rivers (and the sea, eventually) in one case and treatment plants in the other. Goldfish can't survive in salt water, either, and (depending on the treatment process) I doubt it's likely the sewerage farm will do them any good.
I'm more surprised that the arapaima survived 7+ years without becoming sushi
as to storm drains and sewers....it depends on where you live and how old the sewers are. Around here the storm drains all feed into the sewer system and it all goes to the sewage works - unless we get a cloudburst, when the system becomes overloaded and spills into the river, crap and all