The normal tinfoils have the red in their dorsal fin! And yeah, they are total pigs. I have to toss in food at one end of the tank to distract them while I feed the bottom feeders on the other side. Still doesn't always work, they're fast boogers!
That is fantastic Mervyn. I think you are right as the eyes and skin colour and patterns will surely hypnotize anyone. Does it change colour according to mood/behaviour?