Thanks.
One made an appearance yesterday. Caught a glimpse of two today. They don't venture out, but neither do I see the barbs (or the gouramis) picking on them. Only the odessa barbs nip, and only at each other (odessa, not golden). Looks more like male dominance thing.
I guess if I buy more shrimp then my chance of seeing one of them out of the background increases, rather than a confidence issue as they don't shoal. Am I correct? Bamboo shrimp are rather expensive (£11 each over here), so don't really want to buy something that I won't see. Cherry shrimp stays smaller than amano don't they? Someone on here sells cherry shrimp but now I'm not sure it would be a good idea to buy some as they might get eaten... my barbs are about 1.5" at the moment. I think I may have to move the barbs when they get bigger as it may be too big for my 2ft tank. I might put some rasbora instead. Good idea?
Adrian
Correct, shrimp don't shoal but they will sit together in the same areas because they are competing for food.. If you're worried about the cherry shrimp, don't get them, stick with Amano as they are very active. Just get a few more, then you'll see more. Also, don't worry about overstocking with shrimp, the same rules don't apply. For example, I have a 30 gallon with about 200 green shrimp(wild variety of the cherry shrimp). They don't require you to feed them much food and really will live off almost nothing so they are great at cleaning up leftover food and bits of plant matter. I can't speak for the Rasbora as I've not had them with shrimp but I do have pearl gourami, betta and some large tetras and my amano and bamboo shrimp are fine. I've also had cherry shrimp with various tetras and catfish, all got along.