Van der Zee, J.R. & Sonnenberg, R. (2018): A new Aphyosemion species from the Djoué River (Congo River Basin), Republic of the Congo (Teleostei: Cyprinodontiformes: Nothobranchiidae), with remarks on the type locality of Aphyosemion congicum (Ahl, 1924). · Aphyosemion fellmanni Van der Zee & Sonnenberg, 2018 · Killi-Data Series, 2018, 4-19.
Serra, W.S. & Loureiro, M. (2018): Austrolebias queguay (Cyprinodontiformes, Rivulidae), a new species of annual killifish endemic to the lower Uruguay river basin. · Austrolebias queguay Serra & Loureiro, 2018 · Zoosystematics and Evolution, 94 (2): 547–556.
Costa, W.J.E.M., Amorim, P.F. & Mattos, J.L.O. (2018): Cryptic species diversity in the Hypsolebias magnificus complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (Cyprinodontiformes, Aplocheilidae). · Hypsolebias gardneri Costa, 2018 · Hypsolebias hamadryades Costa, 2018 · ZooKeys, 777: 141–158.
Costa, W.J.E.M. (2018): Comparative morphology, phylogeny and classification of African seasonal killifishes of the tribe Nothobranchiini (Cyprinodontiformes: Aplocheilidae). · Cynobranchius subgen. nov. Costa, 2018 · Type species: Fundulus microlepis Vinciguerra, 1897 · Plesiobranchius subgen. nov. Costa, 2018 · Type species: Nothobranchius virgatus Chambers, 1984 · Zoological Journal of the Linnean Society, 184 (1): 115–135.
Fluviphylax wallacei Bragança, P.H.N. (2018): Fluviphylax gouldingi and F. wallacei, two new miniature killifishes from the middle and upper Rio Negro drainage, Brazilian Amazon (Teleostei, Cyprinodontiformes, Cyprinodontoidei). · Fluviphylax gouldingi Bragança et al., 2018 · Fluviphylax wallacei Bragança et al., 2018 · Spixiana: 41 (1): 133-146. [available through Research Gate]
Alonso, F., Terán, G.E., Calviño, P., García, I., Cardoso, Y. & García, G. (2018): An endangered new species of seasonal killifish of the genus Austrolebias(Cyprinodontiformes: Aplocheiloidei) from the Bermejo river basin in the Western Chacoan Region. · Austrolebias wichi Alonso et al., 2018 · PLoS ONE, 13 (5): e0196261.
Agnèse, J.-F., Chirio, L., Legros, O., Oslisly, R. & Bhé, H.M. (2018): Unexpected discovery of six new species of Aphyosemion (Cyprinodontiformes, Aplocheilidae) in the Wonga-Wongué Presidential Reserve in Gabon. · Aphyosemion aurantiacum Chirio et al., 2018 · Aphyosemion barakoniense Chirio et al., 2018 · Aphyosemion flammulatum Chirio et al., 2018 · Aphyosemion flavocyaneum Chirio et al., 2018 [Note: erroneously misspelled cyanoflavum […]
Nagy, B. (2019): Nothobranchius taiti, a new species of annual killifish from the upper Nile drainage in Uganda (Teleostei: Nothobranchiidae). · Nothobranchius taiti Nagy, 2019 · Ichthyological Exploration of Freshwaters, IEF-1091: [1-13]. Published 9 February 2019.
Nielsen, D.T.B. & Britzke, R. (2019): Melanorivulus aithogrammus, a new miniature species (Cyprinodontiformes: Rivulidae) from lower Rio Tapajós basin, Brazil, with a key for the species of the Melanorivulus zygonectes species group. · Melanorivulus aithogrammus Nielsen & Britzke, 2019 · aqua, International Journal of Ichthyology, 25 (1): 35-43.
Costa, W.J.E.M. (2019): Two new species of seasonal killifishes of the Nothobranchius melanospilus species complex from the East Africa biodiversity hotspot (Cyprinodontiformes: Aplocheilidae). · Nothobranchius kwalensis Costa, 2019 · Nothobranchius prognathus Costa, 2019 · Vertebrate Zoology, 69 (1): 73-82.