this post was submitted on 30 Oct 2024
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Science Memes

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Sea Creature Party (mander.xyz)
submitted 5 days ago by [email protected] to c/[email protected]
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[–] [email protected] 49 points 5 days ago (4 children)

Flounders are not bilaterally symmetrical.

[–] [email protected] 89 points 5 days ago (1 children)

Dafuq you say about me?

[–] [email protected] 39 points 5 days ago (1 children)

YOU'RE NOT BILATERALLY SYMMETRICAL

[–] [email protected] 11 points 5 days ago (2 children)

He can't understand you, dude.

Hey,

Flounder!

You'

re no

t bila

terall

y sym

metri

cal!

[–] [email protected] 4 points 5 days ago (1 children)

You speak flounder?

[–] [email protected] 2 points 5 days ago

It's a little hard to pick up, but it's all about one rule: Everything has to be on one side of the page.

[–] [email protected] 3 points 5 days ago

Ah, thanks, I really don't speak flounder too well. Really should learn considering how close to Norway I live

[–] [email protected] 34 points 5 days ago* (last edited 5 days ago) (3 children)

In the tree of life, flounders are a sub-sub-...-sub-species of bilaterally symmetrical animals: https://www.onezoom.org/life/@Holozoa=5246131?otthome=%40_ozid%3D1&highlight=path%3A%40Apionichthys_finis%3D3640785&highlight=path%3A%40Bilateria%3D117569#x2913,y-2310,w8.2796

Edit: let me preemptively be a pedant to myself and say that "sub-...-species" is wrong because "bilaterally symmetrical animals" is not a species. Flounder is itself a species AFAIK, not a sub-species of anything. It is a descendant of the common ancestor of all bilaterally symmetrical animals. There, now surely no one will find anything to be pedantic about :D

[–] [email protected] 10 points 5 days ago (1 children)

I appreciate that information. However, flounders themselves are not bilaterally symmetrical. I have caught many dozens of them and it's pretty easy to tell that they are not.

[–] [email protected] 6 points 5 days ago (2 children)

Flounders are born symmetrical; eye migration happens as they transition to the juvenile stage of growth.

[–] [email protected] 1 points 3 days ago

Oh, I know. It's very interesting. But when people imagine a flounder, they generally don't imagine a juvenile unless juvenile has been specified.

[–] [email protected] 1 points 5 days ago (2 children)

Isn't it referring to during development? Like as they're forming, they are bilateral? I haven't taken developmental biology in many years, so I'm maybe wrong.

[–] [email protected] 1 points 3 days ago

They're only bilateral when they're very young. And even then, everyone is just focusing on the eyes. The body of the fish is also not exactly bilateral. Just fillet a flounder of any age (or watch a video on it) and you'll see.

[–] [email protected] 2 points 5 days ago (1 children)

They are born (or hatch too lazy to look up) and their eyes move later once they get larger.

[–] [email protected] 1 points 3 days ago

Yeah. I just wasn't sure at what point things are considered to be bilateral or otherwise.

I thought it may have been during the development process, but can't remember.

[–] [email protected] 7 points 5 days ago

Just like starfish!

[–] [email protected] 2 points 5 days ago

Forego the illusion of species and families. It's taxa all the way down.

[–] [email protected] 17 points 5 days ago

It depends on whether it was a larvae or not.

[–] [email protected] 5 points 5 days ago

They're "differently symmetrical."