[Caitlin]

http://snailseyeview.blogspot.com/20...sel-shows.html
This one is really great! It shows some of the subterfuges that mussels use to attract fish.
[quote] <H3 class=post-title>Mussel shows



As adults, freshwater mussels sit in the mud and that's about it. It's not a bad life, I suppose, for a mollusc. (It's not a bad life for a human, now I come to think of it.) But there is a problem with a sedentary existence. If no one moves anywhere, the place is going to get overcrowded very quickly. So even stick-in-the-mud bivalves have to disperse.

As adults aren't going to move much, dispersal is down to the larval stages. Most freshwater mussels have a specialised larva called a glochidium that moves around by hitching a ride on a fish. But glochidia don't swim very well, so to increase the chances of the larvae getting a lift, the adult mussels lure fish closer ...

How does a bivalve entice a fish? The same way that a plant brings in a pollinator. It resembles something the fish wants—either food or a mate. And this is where it gets weird.

Mussel shells look like mussel shells. They're stuck with that. But the mantle—the folds of tissue that surround the animal's body­—can vary in colour and shape. Mussels can also flap the mantle to mimic the movements of another fish or wriggle it like a worm. What fish could resist? And when it comes closer, the glochidia latch on and hitch a ride.

So how good is this mimicry? That was Lampsilis reevesiana looking so much like a small fish in trouble that the predators are heading in for a good feed. If you're not convinced, here's an animated gif. Videos are available here.

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There is more, but you should go visit the site.