The Thick Shell Rhythm Muscle

Unlike most European muscles this particular species the thick shell rhythm muscle has a very narrow range of fish that it uses. That's probably one of the reasons why we've got this peculiar behavior. The muscle wants to make sure it gets its larvae on the right fish and not on the wrong fish because otherwise it would waste a lot of its larvae. There's some opportunities for greater experiments to try and sort of really work out what is going on.