I think L193 is the more newly discovered Acanthicus but I'm hazy, it's been years since I read up on it. L155 is a pretend L-number, in that the species already had a name.Sorry to slightly highjack the thread but I'm debating buying an Acanthicus Hystrix. I know they're very easy to differentiate from Adonis but can anyone tell me what the difference is between L155 and L193?