the only real floater fish that I know of is the sunfish. Salmon are upstreamers and catfish are bottomdwellers... i think. Something I was implying is that if one swam with the current with the same vigor as they swam against then they could cover more ground than the opposite swimmer or the floater. But if the call is to swim against the current and stay with the fellow fish or even go further upstream then all is still well. This is with the mentallity that its a river flowing to the ocean and not a circular current... altho it would be harsh for a freshwater fish to swim into the salty ocean. This means the story needs expanded more to explain and possibly focus on how indivdual other fishes fulfill there role. Perhaps I could have a "I. M. Rebelfish", "Ima Floater". Fish needs to be one that covers great distances. Most rebels tho dont cover new ground or make breakthroughs, the ones that do are heralded just as great as Fish in covering great distances. Rebelfish could perhaps get some floaters to start swimming upstream and Ima could get some upstreamers to start floating. The precep of the story is that the upstreamers are not really moving or at least they move upstream but then need a brief rest and are set back downstream.