Most common misconceptions of fish?

[FluffySackson]

I go to petco to buy a replacement UVB bulb for my turtle, and then I see a dude getting a fish bowl. I tell him it's better to get a tank and cycle it and the bowl is not good for fish and he replies "Well fish only live for like a month or two anyways, so who cares." I tell him I had a severum who lived for 9 years, and that's not even his full lifespan (He had a swim bladder issue) and is shocked. What other misconceptions do you guys know of?

Here's some I know of:
Fish have a very short lifespan
Fish are very dumb and only have a 3 second memory

 

[DDK]

Well kinda likes yours. The armatures who buy a tank with all the goodies, throw in 100 dollars worth of fish for them to drop likes flies in a couple days. Then I would ask them did you cycle your tank? Common response is whats cycling a tank? I have a filter to take care of the waste. lol

edit typo

 

[reptilerescued]

Myth?

Fish are not pets.

Rich

 

[midnight_games]

"...They only grow as big as the tank allows, right?"
"...They don't sleep!"
"...That one is big; she must be pregnant?"
"...It doesn't swim fast - it's not healthy"
"...It will last in the bag until tomorrow, right?"

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[Wisconsinbadger]

or the typical goldfish don't get big and can live in bowl

 

[xraycer]

What's a water change?

 

[raymondk394]

If I grow them all up together they won't fight

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[Montelboom]

"I wont need a filter if I clean completely clean the tank every other day"

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[Gill Blue]

fish have no emotions.

 

[fibbingbear]

There's a fish that eats poop