| Neuropeptide regulation of social behavior in a monogamous cichlid fish RG Oldfield, HA Hofmann Physiology & behavior 102 (3-4), 296-303, 2011 | 159 | 2011 |
| Genetic, abiotic and social influences on sex differentiation in cichlid fishes and the evolution of sequential hermaphroditism RG Oldfield Fish and Fisheries 6 (2), 93-110, 2005 | 66 | 2005 |
| Aggression and welfare in a common aquarium fish, the Midas cichlid RG Oldfield Journal of Applied Animal Welfare Science 14 (4), 340-360, 2011 | 62 | 2011 |
| Integrating resource defence theory with a neural nonapeptide pathway to explain territory-based mating systems RG Oldfield, RM Harris, HA Hofmann Frontiers in Zoology 12 (Suppl 1), S16, 2015 | 34 | 2015 |
| Arginine vasotocin and androgen pathways are associated with mating system variation in North American cichlid fishes RG Oldfield, RM Harris, DA Hendrickson, HA Hofmann Hormones and Behavior 64 (1), 44-52, 2013 | 30 | 2013 |
| Biology, husbandry, and reproduction of freshwater stingrays RG Oldfield TFH publications, 2007 | 24 | 2007 |
| Habitat use, social behavior, and female and male size distributions of juvenile Midas cichlids, Amphilophus cf. citrinellus, in Lake Apoyo, Nicaragua RG Oldfield, J McCrary, KR McKaye Caribbean Journal of Science 42 (2), 197, 2006 | 22 | 2006 |
| Parental care in the Cuatro Ciénegas cichlid, Herichthys minckleyi (Teleostei: Cichlidae) RG Oldfield, K Mandrekar, MX Nieves, DA Hendrickson, P Chakrabarty, ... Hydrobiologia 748, 233-257, 2015 | 16 | 2015 |
| Gonad development in Midas cichlids and the evolution of sex change in fishes RG Oldfield Evolution & Development 13 (4), 352-360, 2011 | 15 | 2011 |
| Psychological and social well‐being of bony fishes in zoos and aquariums RG Oldfield, PE Bonano Zoo Biology 42 (2), 185-193, 2023 | 14 | 2023 |
| A novel field technique to assess ploidy in introduced Grass Carp (Ctenopharyngodon idella, Cyprinidae) KL Krynak, RG Oldfield, PM Dennis, M Durkalec, C Weldon Biological Invasions 17, 1931-1939, 2015 | 11 | 2015 |
| Nandus prolixus, a new species of leaf fish from northeastern Borneo (Teleostei: Perciformes: Nandidae) P Chakrabarty, RG Oldfield, HH Ng Zootaxa 1328 (1), 51–61-51–61, 2006 | 10 | 2006 |
| Behavioral interaction, body size, and sex determination in the Midas cichlid Amphilophus citrinellus RG Oldfield J Fish Internat 2, 242-249, 2007 | 9 | 2007 |
| You can't betray a fish: One reason eating fish may cause less harm than eating cows RG Oldfield Journal of Animal Ethics 12 (1), 51-58, 2022 | 7 | 2022 |
| Saltwater cichlids. Knowledge of salinity tolerance and preference may allow new species combinations and improved husbandry in aquaria. RG Oldfield R/C Modeler Corporation, 2007 | 7 | 2007 |
| Agonistic behavior and feeding competition in the largest piranha species, Pygocentrus piraya, in a zoo RG Oldfield, JE Thal, P Das, NJ Zarlinga, KE Lukas, JD Wark Journal of Ethology 41 (1), 25-37, 2023 | 5 | 2023 |
| Growth patterns in Midas Cichlids are not consistent with a hypothesis of socially controlled sex determination RG Oldfield Copeia 2009 (1), 71-77, 2009 | 4 | 2009 |
| Response to Salinity Challenge in Non-native Cichlid Fishes of the Genus Herichthys Introduced in the Gulf Coast Region of the United States RG Oldfield, J Hooks, J Sommer, SC McCain, WI Lutterschmidt, ... Ichthyology & Herpetology 109 (2), 587-597, 2021 | 2 | 2021 |
| Psychological and social well-being of bony fishes in zoos and aquariums RG Oldfield, P Bonano Animal Sentience 9 (36), 1, 2024 | 1 | 2024 |
| Life in a fishbowl: Space and environmental enrichment affect behaviour of Betta splendens RG Oldfield, EK Murphy Animal Welfare 33, e1, 2024 | 1 | 2024 |
