Käyttäjän joshjensen havainnot

I don't think this is S. cyanopterus due to the thicker mouth with dermal tentacles ala S. paegnius but I don't think it is that either. I expect it will be accepted as one of the known species, but I always thought it a bit different to the others I have filmed over the years. There appears to be a row of spots along the body also which is probably not diagnostic but I don't think I have seen it before in the group.