So those with dither fish, how many do you need and how does it work?
Is it a large shoal that makes the small fish feel safe, or the presence of unscared fish, or bigger fish, or smaller fish than them? I suspect it can't be the presence of bigger fish or people with discus would need huge other fish as dithers?? :dunno:
At the store there are some dwarves in with some larger dither fish, 1 inch+ and 3 were sitting at the front of the tank and unmoveable to me waving about like a moron. The mosquito rasbora are the smallest and possibly most appropriate for my 22L tank. Also available by ordering were danio - nigrafaciatus, shanesis and kyathit, though ranging up to twice the price of a rasbora.