Thank you ca1ore. I appreciate your comments. I may come across as heartless and even cruel as I have been called on here before, but I of course would sell on any fish that I believed was too big for the tank. I see a regal the other day that was smaller than my thumbnail, and from experience (of keeping a regal tang of moderate young adult size in a 30 litre nano perfectly fine for 3 years, it subsequently died after getting a 120l tank. That is why I'm sceptical when people say 'oh that tank is too small') it is going to be a totally adequate size for some time, albeit until it comes of age and size when it is too big. That thumbnail would probably last 4-5 years until it outgrew the tank. And by then may be in a new bigger tank, and if not sold on or given away. I don't believe people can say 'that tank is too small' because it's simply not always the case but the easiest thing to say.
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