• BreadOven@lemmy.world
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      3 个月前

      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
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        3 个月前

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

        • BreadOven@lemmy.world
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          3 个月前

          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.

      • Drusas@fedia.io
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        3 个月前

        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.

        • BreadOven@lemmy.world
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          3 个月前

          Sorry, I’m talking about like when the fish first starts developing. Like how the initial cells orient themselves. I just have to look up what the definition actually is.

    • Drusas@fedia.io
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      3 个月前

      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.