Costa, W.J.E.M. (2019): Description of a new species of cynopoeciline killifish (Cyprinodontiformes, Aplocheilidae), possibly extinct, from the Atlantic Forest of south-eastern Brazil. Leptopanchax sanguineus Costa, 2019 Zookeys, 867: 73-85.
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): Diversity and conservation of seasonal killifishes of the Hypsolebias fulminantis complex from a Caatinga semiarid upland plateau, São Francisco River basin, northeastern Brazil (Cyprinodontiformes, Aplocheilidae). · Hypsolebias splendissimus Costa, 2018 · Zoosystematics and Evolution, 94 (2): 495-504.
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.
