Mating Preference, AnimalSexual Behavior, AnimalPoeciliaCourtshipFemininityChoice BehaviorTrinidad and TobagoPigmentationBody SizeAnimal CommunicationReproductionSex CharacteristicsBiological EvolutionFaceSelection, GeneticSocial EnvironmentFood PreferencesPatient PreferenceIlex paraguariensisGenetic VariationPair BondOrganic Cation Transport ProteinsCopulationCompetitive BehaviorSex AttractantsImprinting (Psychology)BeautyVocalization, AnimalGryllidaeSongbirdsBehavior, AnimalSex RatioTastePatient SatisfactionSocial BehaviorOvipositionOdorsColorPheromonesFertilityCichlidsCyprinodontiformesSmellConditioning (Psychology)FinchesFeeding BehaviorInbreedingSubstrate SpecificitySocial DominanceDecision MakingPasseriformesTerritorialityMolecular Sequence Data