LampreysPetromyzonRiversHagfishesLarva MigransFishesPhysiology, ComparativeSwimmingFresh WaterSpinal CordVertebratesReticular FormationLocomotionDipteraPhylogenyPyrrolidonecarboxylic AcidGnathostomaWater MovementsChordata, NonvertebrateInvertebratesBiological EvolutionChironomidaeEcosystemMolecular Sequence Data