Great pics!!
Have you noticed that the markings on ocellatus change as the fish mature? The marbling along the tail seems to break up into smaller spots and blotches making the fish look more like G. farragus.
Lovely, lovely pics! When are you going to get that new camera you've been talking about for a while, Martin? It'd be great to see what you could do with even more mega pixels! My camera has broken and I've got a new (second hand) one coming next week - it's a Nikon Coolpix 8700 so a lot more MP than my current one.