I'm done arguing with you Haggis. That is one opinion you have about the word from one source, period. The word can have either meaning, if you choose to be so picky about the meaning then fine be that way, but simply put dither's can serve either purpose. You saying it can't is false information because many people, not just myself, commonly accept it to mean both things. If you want to get right down to it, the word Dither means to act erratically, or nervously. Target fish do this to attract the attention of the predatory aggressive fish in the tank, and also if they act in the same manner, they can encourage shy fish to come out from hiding because of their fearless behavior. Thus the word Dither fish can be suited just fine to either type of use they are used for.