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[-] Drusas@fedia.io 47 points 1 day ago

Flounders are not bilaterally symmetrical.

[-] hydroptic@sopuli.xyz 39 points 1 day ago

YOU'RE NOT BILATERALLY SYMMETRICAL

[-] NeatNit@discuss.tchncs.de 33 points 1 day ago* (last edited 1 day ago)

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

[-] Drusas@fedia.io 8 points 1 day ago

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.

[-] austinfloyd@ttrpg.network 6 points 16 hours ago

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

[-] BreadOven@lemmy.world 1 points 16 hours ago

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.

[-] Crashumbc@lemmy.world 1 points 15 hours ago

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

[-] azi@mander.xyz 7 points 1 day ago

Just like starfish!

[-] barsoap@lemm.ee 2 points 1 day ago

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

[-] Morphit@feddit.uk 17 points 1 day ago

It depends on whether it was a larvae or not.

[-] blackbrook@mander.xyz 4 points 1 day ago

They're "differently symmetrical."

this post was submitted on 30 Oct 2024
652 points (100.0% liked)

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