Species that contain: Apionichthys and dumerili [ 5 ] records

bleekeri, Apionichthys Horst [R.] 1878:31 [Tijdschrift der Nederlandsche Dierkundige Vereeniging v. 4; ref. 18311] Holotype (unique): whereabouts unknown. •Synonym of Apionichthys dumerili Kaup 1858 -- (Ramos 2003:116 [ref. 26762], Ramos in Reis et al. 2003:667 [ref. 27061]). Current status: Synonym of Apionichthys dumerili Kaup 1858. Achiridae. Habitat: freshwater, brackish.

dumerili, Apionichthys Kaup [J. J.] 1858:104 [Archiv für Naturgeschichte v. 24 (pt. 1); ref. 2578] Syntypes: BMNH 1927.4.27.1 [ex MNHN] (1); MNHN 0000-3214 (2), 0000-3216 (1). Type catalog: Desoutter et al. 2001:317 [ref. 25922]. •Valid as Apionichthys dumerili Kaup 1858 -- (Cervigón 1992:438 [ref. 23827], Cervigón 1996:18 [ref. 24489], Keith et al. 2000:252 [ref. 24547], Camargo & Isaac 2001:144 [ref. 27639], Ramos 2003:115 [ref. 26762], Munroe 2003:1930 [ref. 27118], Ramos in Reis et al. 2003:667 [ref. 27061], Ramos in Menezes et al. 2003:107 [ref. 27192], Marceniuk et al. 2017:42 [ref. 35324], see DoNascimiento et al. 2017:[25] [ref. 35679], Rotundo et al. in Marceniuk et al. 2021:400 [ref. 38945], Bitencourt et al. 2022:4 [ref. 39848], Koerber et al. 2022:68 [ref. 39235], Lasso & Lasso-Alcalá in Lasso & Morales-Betancourt 2022:290 [ref. 40783], Carvalho-Filho 2023:266 [ref. 40480]). Current status: Valid as Apionichthys dumerili Kaup 1858. Achiridae. Distribution: Widespread in South America: Venezuela to Maranhão (Brazil). Habitat: freshwater, brackish.

nebulosus, Apionichthys Peters [W. (C. H.)] 1869:709 [Monatsberichte der Königlichen Preussischen Akademie der Wissenschaften zu Berlin 1869; ref. 14098] Suriname. Syntypes: (2) ZMB 7092 (1). •Synonym of Apionichthys dumerili Kaup 1858 -- (Ramos 2003:116 [ref. 26762], Ramos in Reis et al. 2003:667 [ref. 27061]). Current status: Synonym of Apionichthys dumerili Kaup 1858. Achiridae. Habitat: freshwater, brackish.

ottonis, Apionichthys Steindachner [F.] 1868:120 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 5 (no. 14) (for 22 May 1867); ref. 20463] Sicily, Mediterranean Sea [in error]. Syntypes: (several) NMW 14122-23 (2). Species later described in more detail in 1868:41 [ref. 14081], and in English in Steindachner 1868:80 [ref. 21726]. •Synonym of Apionichthys dumerili Kaup 1858 -- (Ramos 2003:116 [ref. 26762], Ramos in Reis et al. 2003:667 [ref. 27061]). Current status: Synonym of Apionichthys dumerili Kaup 1858. Achiridae. Habitat: freshwater, brackish.

unicolor, Soleotalpa Günther [A.] 1862:489 [Catalogue of the fishes in the British Museum v. 4; ref. 1969] West Indies. Holotype (unique): BMNH 2012.10.24.8. •Valid as Apionichthys unicolor (Günther 1862) -- (Ortega & Vari 1986:21 [ref. 9708], Ramos 2003:115 [ref. 26762]). •Synonym of Apionichthys dumerili Kaup 1858 -- (Ramos in Reis et al. 2003:667 [ref. 27061]). Current status: Synonym of Apionichthys dumerili Kaup 1858. Achiridae. Habitat: freshwater, brackish.