Fish Ignoring The Seamoth
JimmyLander
Bulgaria Join Date: 2016-06-15 Member: 218623Members
Bulgaria Join Date: 2016-06-15 Member: 218623Members
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And Earth fish tend to have that. I forget what it's called... But basically their nervous systems can detect changes in pressure, so they instinctively/reactional propel themselves out of harms way. Harms way being, predators biting or lunging at them... Or a Seamoth
Maybe we're not scary enough. We need a Seawasp as our next submarine!
What is your avatar
By and large, yes, you're absolutely correct, @Kouji_San. The Weberian Apparatus allows pressure changes to be sensed; as pressure changes, the fish's swim bladder is squeezed, and that movement is transmitted to the fish's middle ear. (Basically, they're "hearing" the pressure change.) Even fish without swim bladders, like some loaches, can detect pressure changes, but not nearly as quickly - they detect more changes in ambient pressure rather than spikes caused by localized effects.
So we can draw two hypotheses based on our observations:
1. Most of the fish on 4546B lack swim bladders or an equivalent structure, and do not have a replacement mechanism to detect rapid changes in water pressure. This would increase predation, forcing evolutionary changes to detect predators (like a Peeper's improved vision) or a fast reproductive rate to offset predation losses.
2. Or fish on 4546B are incredibly stupid.
Good thing most of them have eyes then, I guess. The collective mortido that these life forms exhibit isn't exactly an evolutionary advantage.
Not really an evolutionary detriment, though, as long as they breed like crazy. Lots of species here on Earth have the same mechanic going...much as we wish they didn't. (Looking at YOU, mosquitoes.)