Nannostomus, Gunther, 1872

Toledo-Piza, Mônica, Baena, Eduardo G., Dagosta, Fernando C. P., Menezes, Naércio A., Ândrade, Marcelo, Benini, Ricardo C., Bertaco, Vinicius A., Birindelli, José Luís O., Boden, Gert, Buckup, Paulo A., Camelier, Priscila, Carvalho, Fernando R., Castro, Ricardo M. C., Chuctaya, Junior, Decru, Eva, Derijst, Eddy, Dillman, Casey B., Ferreira, Katiane M., Merxem, Dimitri G., Giovannetti, Victor, Hirschmann, Alice, Jégu, Michel, Jerep, Fernando C., Langeani, Francisco, Lima, Flávio C. T., Lucena, Carlos A. S., Lucena, Zilda Margarete S., Malabarba, Luiz R., Malabarba, Maria Cláudia S. L., Marinho, Manoela M. F., Mathubara, Kleber, Mattox, George M. T., Melo, Bruno F., Moelants, Tuur, Moreira, Cristiano R., Musschoot, Tobias, Netto-Ferreira, André L., Ota, Rafaela P., T. Oyakawa, Osvaldo, Pavanelli, Carla S., Reis, Roberto E., Santos, Osmar, Serra, Jane Piton, Silva, Gabriel S. C., Silva-Oliveira, Cárlison, Souza-Lima, Rosana, Vari, Richard P. & Zanata, Angela M., 2024, Checklist of the species of the Order Characiformes (Teleostei: Ostariophysi), Neotropical Ichthyology (e 230086) 22 (1), pp. 1-548 : 385-389

NANNOSTOMUS Günther, 1872

MMF Marinho

Nannostomus Günther, 1872b:146 . Type species: Nannostomus beckfordi Günther, 1872 . Type by monotypy. Gender: Masculine.

Archicheir Eigenmann, 1909a:46 . Type species: Archicheir minutus Eigenmann, 1909 . Type by monotypy. Gender: Feminine.

Poecilobrycon Eigenmann, 1909a:43 . Type species: Poecilobrycon harrisoni Eigenmann, 1909 . Type by original designation. Gender: Masculine.

Nannobrycon Hoedeman, 1950a:15 , 22. Type species: Nannostomus eques Steindachner, 1876 . Type by original designation. Gender: Masculine.

Nannostomus anduzei Fernandez, Weitzman, 1987

Nannostomus anduzei Fernandez, Weitzman, 1987:165 , figs. 1–7. Type locality: Venezuela, Territorio Federal de Amazonas, Departamento de Ature, Laguna Provincial , approximately 20 km north of Puerto Ayacucho , about 55°50’N, 67°30’W. Holotype: MBUCV-V-15141.

Distribution: 307, 314 (Fernandez, Weitzman, 1987).

Nannostomus beckfordi Günther, 1872

Nannostomus beckfordi Günther, 1872b:146 . Type locality: gefangen. [ Coast of Demerara, Guyana]. Holotype: BMNH 1871.12 .28.10. [Picture of the holotype in Weitzman, Cobb (1975: fig. 11)].

Nannostomus anomalus Steindachner, 1876c:129 [81]. Type locality: Mündung des Rio negro; Amazonenstromes bei Obidos. [Mouth of rio Negro and rio Amazonas at Óbidos]. Syntypes: (several) not found at NMW. Status of species taken from Weitzman (1966).

Nannostomus simplex Eigenmann, 1909a:42 . Type locality: Lama Stop-Off , Guyana. [Lama Stop-Off, coastal basin, about twenty-five miles east of Georgetown, Guyana (Pavanelli et al., 2003)]. Holotype: FMNH 52773 . Status of species taken from Weitzman (1966).

Nannostomus aripirangensis Meinken, 1931:553 , fig. Type locality: Unterwasservegetation auf der Insel Aripiranga im unteren Amazonas. [Northeast of Belém, Pará, Brazil]. Neotype: ZMB 33973. Syntypes: destroyed during WWII. [Neotype designated by Zarske (2011d). Picture and X-ray image of the neotype provided by Zarske (2012b: figs. 106 b, c)]. Status of species discussed by Weitzman (1966) and Zarske (2011d).

Nannostomus beckfordi surinami Hoedeman, 1954:84 . Type locality: Berg en Dal at Surinam River, Surinam [ Suriname]. Holotype: ZMA 100514 a. Status of species taken from Weitzman (1966).

Distribution: 310, 311, 323, 316 ( Weitzman, Weitzman, 1982).

Remarks: Redescription by Weitzman (1966). Most updated identification key in Weitzman (1978). Nannostomus beckfordi is probably introduced in rio Jaguaribe, Salvador, and rios Capivara and Tambaí, Camaçari, Bahia (P. Camelier, pers. obs.), baía de Guanabara, Rio de Janeiro (Bizerril, Lima, 2001) and coastal drainages of São Paulo State at Bertioga (B. Abreu, pers. obs.) and Itanhaém (pers. obs.).

Nannostomus bifasciatus Hoedeman, 1954

Nannostomus bifasciatus Hoedeman, 1954:85 , fig. Type locality: Berg en Dal at Surinam River, Surinam. Holotype: ZMA 100513 (apparently lost).

Distribution: 311 ( Weitzman, Weitzman, 1982).

Remarks: Redescription by Weitzman (1966). Most updated identification key in Weitzman (1978).

Nannostomus britskii Weitzman, 1978

Nannostomus britskii Weitzman, 1978:5 , figs. 3–4. Type locality: Brazil, State of Amazonas , an igarapé of Lago José-Açú , Parintins, Amazon River. Holotype: MZUSP 7795 .

Distribution: 316 ( Weitzman, Weitzman, 2003).

Remarks: Due to a printer error, the correct distribution data of Nannostomus britskii given by Weitzman, Weitzman (1982) is on fig. 22.12 (represented by black triangles), not fig. 22.13 ( Weitzman, Weitzman, 2003).

Nannostomus digrammus (Fowler, 1913)

Poecilobrycon digrammus Fowler, 1913b:525 , fig. 5. Type locality: Madeira River , about 200 miles east of W. Long. 62°20’, Brazil. Holotype: ANSP 39189 .

Distribution: 309, 310, 314, 315, 316, 318, 319, 321 ( Weitzman, 1966; Weitzman, Weitzman, 2003; Marinho, Netto-Ferreira, 2013).

Remarks: Taxonomic review by Weitzman (1966), Weitzman, Cobb (1975). Most updated identification key in Weitzman (1978).

Nannostomus eques Steindachner, 1876

Nannostomus eques Steindachner, 1876c:126 [78], Pl. 9 (fig. 3). Type locality: Amazenenstrome anf peruanischem gebiete oberhalb Tabatinga. [Peruvian Amazon above Tabatinga]. Syntypes: (several) NMW 56513 (5).

Poecilobrycon auratus Eigenmann, 1909a:43 . Type locality: Konawaruk. [ Konawaruk river , tributary of Essequibo, Guyana]. Holotype: FMNH 52768 . Status of species discussed by Weitzman (1966).

Distribution: 307, 308, 309, 310, 314, 316, 321, 323, 324* ( Weitzman, 1966; Weitzman, Weitzman, 1982; MMF Marinho, pers. obs.).

Remarks: Taxonomic review by Weitzman (1966), Weitzman, Cobb (1975). Most updated identification key in Weitzman (1978). Due to a printer error, the correct distribution data given by Weitzman, Weitzman (1982) is on fig. 22.12 (represented by black discs), not fig. 22.13 ( Weitzman, Weitzman, 2003).

Nannostomus erythrurus (Eigenmann, 1909)

Poecilobrycon erythrurus Eigenmann, 1909a:44 . Type locality: Rockstone , sandbank, Guyana. Holotype: FMNH 52774 .

Distribution: 310 (Eigenmann, 1909a)

Remarks: Revalidated by Zarske, 2013, however validity should be further evaluated.

Nannostomus espei (Meinken, 1956)

Poecilobrycon espei Meinken, 1956:31 , figure. Type locality:not given. [Type locality was inferred by Böhlke (1956) as a locality along the Paruma river, a tributary of the Kamarang river, Mazaruni river basin, apparently in the vicinity of 5°50’ to 55’N, 61°05’ to 10’W, which would be the collecting site the original aquarium imports of this species. See also Weitzman (1966)]. Lectotype: SU 51593. [Designated by Weitzman (1966)].

Distribution: 310 ( Weitzman, 1966; Weitzman, Cobb, 1975).

Nannostomus grandis Zarske, 2011

Nannostomus grandis Zarske, 2011d:285 , figs. 1–3, 10–14. Type locality: Import Firma Glaser aus Belem, Para, Brasilien. Holotype: MTD F 32459 .

Distribution: Unknown

Remarks: Aquarium specimens of unknown locality. Possibly synonym of Nannostomus beckfordi . A taxonomic revision is necessary to clarify the limits of both taxa.

Nannostomus harrisoni (Eigenmann, 1909)

Poecilobrycon harrisoni Eigenmann, 1909a:43 . Type locality: Canal at Christianburg, Guyana. [Canal at Christianburg, Demerara River, Guyana ( Weitzman, Cobb, 1975)]. Holotype: FMNH 52767 .

Archicheir minutus Eigenmann, 1909a:46 . Type locality: Canal at Christianburg, Guyana. [Canal at Christianburg, Demerara River, Guyana ( Weitzman, Cobb, 1975)]. Holotype: FMNH 52786. Status of species taken from Weitzman (1966).

Nannostomus cumuni Arnold, 1950:72. Type locality: Unknown. No type specimen. Questionably a synonym of Nannostomus harrisonsi (Eigenmann, 1909) ( Weitzman, 1966:38).

Distribution: 311 ( Weitzman, Weitzman, 2003).

Remarks: Weitzman (1966:41) formally placed Archicheir minutus Eigenmann, 1909 as synonym of Nannostomus harrisoni (Eigenmann, 1909) which constitutes a first reviser action. Developemental color variation documented by Weitzman, Cobb (1975). Most updated identification key in Weitzman (1978).

Nannostomus limatus Weitzman, 1978

Nannostomus limatus Weitzman, 1978:9 , figs. 6–8. Type locality: Brazil, State of Pará , an igarapé tributary to Lago Mapará , near Santarém, Amazon River. Holotype: MZUSP 8486 .

Distribution: 316 (Weitzman, 1978).

Nannostomus marginatus Eigenmann, 1909

Nannostomus marginatus Eigenmann, 1909a:41 . Type locality: Muduni Creek , Guyana. [Muduni Creek, Mahaica river, Guyana]. Holotype: FMNH 53550 .

Nannostomus marginatus picturatus Hoedeman, 1954:87 . Type locality: A ditch near Zanderij II, Surinam [ Suriname]. Holotype: ZMA 100324 a. Status of species discussed by Weitzman (1966).

Distribution: 308, 310, 311, 313, 314, 316 ( Weitzman, Weitzman, 1982).

Remarks: Redescription by Weitzman (1966). Most updated identification key in Weitzman (1978). The correct distribution data given by Weitzman, Weitzman (1982) is on fig. 22.10, not fig. 22.11.

Nannostomus marilynae Weitzman, Cobb, 1975

Nannostomus marilynae Weitzman, Cobb, 1975:29 , figs. 28–30. Type locality: Brazil, Rio Negro , rock pools below rapids, Sâo Gabriel. [São Gabriel da Cachoeira, Amazonas, Brazil]. Holotype: SU 50238 .

Distribution: 314, 315*, 316* ( Weitzman, Cobb, 1975; MMF Marinho, pers. obs.).

Nannostomus minimus Eigenmann, 1909

Nannostomus minimus Eigenmann, 1909a:42 . Type locality: Erukin , Guyana. [Erukin, tributary of rio Potaro, Guyana]. Holotype: FMNH 52771 .

Distribution: 310 ( Weitzman, Weitzman, 1982).

Remarks: Redescription in Weitzman, Cobb (1975). Most updated identification key in Weitzman (1978).

Nannostomus mortenthaleri Paepke, Arendt, 2001

Nannostomus marginatus mortenthaleri Paepke, Arendt, 2001:144 , figs. 1–6, 10–13, 15. Type locality: Peru, Departemento of Loreto, province of Maynas (previously the province of Iquitos), administrative district of Santa Maria , small tributary of Rio Nanay at the village of Alvarenga (before Puerto Alianza), about 130 km (air distance) west of Iquitos , 74°25’40”W, 3°31’10”S. Holotype: MUSM 17719 .

Distribution: 316 (Paepke, Arendt, 2001).

Nannostomus nigrotaeniatus Zarske, 2013

Nannostomus nigrotaeniatus Zarske, 2013:127 , figs. 1–8, plate 1 a, b. Type locality: Venezuela, río Ventuari , Import Firma Glaser. [Aquarium fishes, imported]. Holotype: MTD F 32993 .

Distribution: 308 ( Zarske, 2013).

Nannostomus nitidus Weitzman, 1978

Nannostomus nitidus Weitzman, 1978:3 , figs. 1–2. Type locality: Brazil, State of Pará , Igarapé Candiru-Mirim near Badajós, Rio Capim. Holotype: MZUSP 12920 .

Distribution: 315*, 323 ( Weitzman, Weitzman, 1982; MMF Marinho, pers. obs.).

Remarks: Most updated identification key in Weitzman (1978). Distribution map in fig. 22.9 of Weitzman, Weitzman (1982). Similarity between Nannostomus nitidus and N. limatus is discussed in Weitzman, Weitzman (2003).

Nannostomus rubrocaudatus Zarske, 2009

Nannostomus rubrocaudatus Zarske, 2009:12 , figs. 1–6, 12a-b. Type locality: Import Firma Glaser. [Aquarium fishes, said to be from Peru. Probably Saramirisa, at the banks of the Marañon, between the rivers Morona and Santiago, Loreto, Peru ( Zarske, 2009)]. Holotype: MTD F 31562.

Distribution: 316 ( Zarske, 2009).

Nannostomus trifasciatus Steindachner, 1876

Nannostomus trifasciatus Steindachner, 1876c:123 [75], Pl. 9 (fig. 2). Type locality: Mündung des Rio negro; Amazonenstromes bei Tabatinga. [Mouth of rio Negro and rio Amazonas at Tabatinga, Amazonas, Brazil]. Syntypes: NMW 56522–23 (3, 5). [Picture and X-rays of three syntypes in figs 10 and 11 of Zarske (2013:124).

Poecilobrycon erythrurus Eigenmann 1909:44 . Type locality: Rockstone , sandbank, Guyana. Holotype: FMNH 52774 . Status of species discussed by Weitzman (1966 [[12368]])

Poecilobrycon vittatus Ahl 1934a:124 . Type locality: Para. [Pará, Brazil]. Syntypes: ZMB 20791 (5). [Picture and X-ray of one syntype provided by Zarske (2012b: figs. 110 a, b)]. Status of species discussed by Weitzman (1966).

Distribution: 310, 314*, 316, 319, 323 ( Weitzman, Weitzman, 1982; MMF Marinho, pers. obs.).

Remarks: Most updated identification key in Weitzman (1978). Due to a printer error, the correct distribution data given by Weitzman, Weitzman (1982) is on fig. 22.13. not fig. 22.10 ( Weitzman, Weitzman, 2003).

Nannostomus unifasciatus Steindachner, 1876

Nannostomus unifasciatus Steindachner, 1876c:127 [79], Pl. 9 (fig. 1). Type locality: Mündung des Rio negro in kleinen Ausständen und Nebenarmen. [Mouth of rio Negro at small stream, Brazil]. Syntypes: (several) NMW 56514 (4), 58741 (3).

Poecilobrycon ocellatus Eigenmann, 1909a:45 . Type locality: Wismar , Guyana. [Wismar, Demerara, Guyana]. Holotype: FMNH 52975 . Status of species discussed by Weitzman (1966).

Distribution: 310, 314, 316, 321 ( Weitzman, Weitzman, 1982; Marinho, Netto-Ferreira, 2013).

Remarks: Most updated identification key in Weitzman (1978). The correct distribution data given by Weitzman, Weitzman (1982) is on fig. 22.11, neither fig. 22.12 nor fig. 22.13 ( Weitzman, Weitzman, 2003) indicate the correct distribution.

Species inquirenda ( Nannostomus )

Cyprinodon amazona Eigenmann, 1894:627 . Type locality: Lower Amazonas. [ Brazil]. Syntypes: CAS 29351 (5); BMNH 1894.5 . 18.52 (1). [ Description based on 18 specimens (syntypes). Weitzman (1966:28) mentioned that types were not located at that time. Six specimens assigned as syntypes are currently deposited at CAS and BMNH] .

Remarks: Most likely a synonym of either Nannostomus trifasciatus Steindachner 1876 or N. marginatus Eigenmann, 1909 ( Weitzman, 1966:27).