LampreysPetromyzonTroutSalmonidaeCircular DichroismHagfishesDNA, CircularPerchesMicrosporeaPhysiology, ComparativeOncorhynchusOxathiinsGillsFishesSwimmingVertebratesSpinal CordFresh WaterOncorhynchus mykissReticular FormationPhylogenySalmonMolecular Sequence DataPyrrolidonecarboxylic AcidLocomotionNew HampshireChordata, NonvertebrateFisheriesAtlanto-Axial Joint