Nově popsané druhy v roce 2003

Acrochordonichthys gyrinus Vidthayanon & Ng 2003

Vidthayanon, C. & H. H. Ng. 2003. Acrochordonichthys gyrinus, a new species of akysid catfish (Teleostei: Siluriformes) from Thailand. Zootaxa No. 183: 1-7.

Akysis clavulus Ng & Freyhof, 2003

Ng, H. H. & J. Freyhof 2003. Akysis clavulus, a new species of catfish (Telostei: Akysidae) from central Vietnam. Ichthyol. Explor. Freshwaters v. 14 (no. 4): 311-316.

Apareiodon argenteus Pavanelli & Britski, 2003

Pavanelli, C. S. & H. A. Britski. 2003. Apareiodon Eigenmann, 1916 (Teleostei, Characiformes), from the Tocantins-Araguaia basin, with description of three new species. Copeia 2003 (no. 2): 337-348.

Apareiodon cavalcante Pavanelli & Britski, 2003

Apareiodon tigrinus Pavanelli & Britski, 2003

Aphanius villwocki Hrbek & Wildekamp, 2003

Hrbek, T. & R. H. Wildekamp. 2003. Aphanius villwocki, a new species from the Sakarya River basin of central Anatolian plain, Turkey (Teleostei: Cyprinodontiformes). Ichthyol. Explor. Freshwaters v. 14 (no. 2): 137-144.

Aphyocharax yekwanae Willink, Chernoff & Machado-Allison Willink, 2003

Willink, P. W., B. Chernoff, A. Machado-Allison, F. Provenzano & P. Petry. 2003. Aphyocharax yekwanae, a new species of bloodfin tetra (Teleostei: Characiformes: Characidae) from the Guyana Shield of Venezuela. Ichthyol. Explor. Freshwaters v. 14 (no. 1): 1-8.

Aphyolebias claudiae Costa, 2003

Costa, W. J. E. M. 2003. Three new annual fishes of the genus Aphyolebias Costa, 1998 (Cyprinodontiformes: Rivulidae) from Bolivian and Peruvian Amazon. Comun. Mus. Ciênc. Technol. PUCRS, Sér. Zool. Porto Alegre v. 16 (no. 2): 155-166.

Aphyolebias manuensis Costa, 2003

Aphyolebias schleseri Costa, 2003

Apionichthys menezesi Ramos, 2003

Ramos, R. T. da C. 2003. Systematic review of Apionichthys (Pleuronectiformes: Achiridae), with description of four new species. Ichthyol. Explor. Freshwaters v. 14 (no. 2): 97-126.

Apionichthys rosai Ramos, 2003

Ramos, R. T. da C. 2003. Systematic review of Apionichthys (Pleuronectiformes: Achiridae), with description of four new species. Ichthyol. Explor. Freshwaters v. 14 (no. 2): 97-126.

Apionichthys sauli Ramos, 2003

Ramos, R. T. da C. 2003. Systematic review of Apionichthys (Pleuronectiformes: Achiridae), with description of four new species. Ichthyol. Explor. Freshwaters v. 14 (no. 2): 97-126.

Apionichthys seripierriae Ramos, 2003

Ramos, R. T. da C. 2003. Systematic review of Apionichthys (Pleuronectiformes: Achiridae), with description of four new species. Ichthyol. Explor. Freshwaters v. 14 (no. 2): 97-126.

Apistogramma acrensis Staeck, 2003

Staeck, W. 2003. Cichliden-Lexikon, Tiel 3: Südamerikanische Zwergbuntbarsche. Dähne Verlag. Cichliden-Lexikon Tiel 3: 1-219.

Apistogramma inornata Staeck, 2003

Staeck, W. 2003. Cichliden-Lexikon, Tiel 3: Südamerikanische Zwergbuntbarsche. Dähne Verlag. Cichliden-Lexikon Tiel 3: 1-219.

Apistogramma martini Römer, Hahn, Römer, Soares & Wöhler, 2003

Römer, U., I. Hahn, E. Römer, D. P. Soares & M. Wöhler. 2003 Apistogramma martini sp. n. -- Beschreibung eines geophaginen Zwergcichliden (Teleostei: Perciformes) aus dem nördlichen Peru. Das Aquarium v. 37 (no. 4) No. 406: 14-29.

Apistogramma similis Staeck, 2003

Staeck, W. 2003. Cichliden-Lexikon, Tiel 3: Südamerikanische Zwergbuntbarsche. Dähne Verlag. Cichliden-Lexikon Tiel 3: 1-219.

Apistogramma tucurui Staeck, 2003

Staeck, W. 2003. Cichliden-Lexikon, Tiel 3: Südamerikanische Zwergbuntbarsche. Dähne Verlag. Cichliden-Lexikon Tiel 3: 1-219.

Apistogramma velifera Staeck, 2003

Staeck, W. 2003. Cichliden-Lexikon, Tiel 3: Südamerikanische Zwergbuntbarsche. Dähne Verlag. Cichliden-Lexikon Tiel 3: 1-219.

Apogon brevispinis Fraser & Randall, 2003

Fraser, T. H. & J. E. Randall. 2003. Two new species of deeper dwelling Apogon (Perciformes: Apogonidae) from Micronesia and South Pacific Ocean. Zootaxa No. 171: 1-11.

Apogon erythrosoma Gon & Randall, 2003

Gon, O. & J. E. Randall. 2003. A review of the cardinalfishes (Perciformes: Apogonidae) of the Rea [sic] Sea. Smithiana, Publ. in Aquatic Biodiversity Bull. 1: 1-48.

Apogon regula Fraser & Randall, 2003

Fraser, T. H. & J. E. Randall. 2003. Two new species of deeper dwelling Apogon (Perciformes: Apogonidae) from Micronesia and South Pacific Ocean. Zootaxa No. 171: 1-11.

Apteronotus caudimaculosus Santana, 2003

Santana, C. L. de. 2003. Apteronotus caudimaculosus n. sp. (Gymnotiformes: Apteronotidae), a sexually dimorphic black ghost knifefish from the Pantanal, western Brazil, with a note on the monophyly of the A. albifrons species complex. Zootaxa No. 252: 1-11.

Argyripnus pharos Harold & Lancaster, 2003

Harold, A. S. & K. Lancaster. 2003. A new species of the hatchetfish genus Argyripnus (Stomiiformes: Sternoptychidae) from the Indo-Pacific. Proc. Biol. Soc. Wash. v. 116 (no. 4): 883-891.

Archamia flavofasciata Gon & Randall, 2003

Gon, O. & J. E. Randall. 2003. Revision of the Indo-Pacific cardinalfish genus Archamia (Perciformes: Apogonidae), with description of a new species. Indo-Pac. Fishes No. 35: 1-49, Pls. 1-3.

Ariopsis festinus (Ng & Sparks 2003)

Ng, H. H. & J. S. Sparks. 2003. The ariid catfishes (Teleostei: Siluriformes: Ariidae) of Madagascar, with the description of two new species. Occas. Pap. Mus. Zool. Univ. Mich. No. 735: 1-21.

Ariopsis uncinatus (Ng & Sparks, 2003)

Ng, H. H. & J. S. Sparks. 2003. The ariid catfishes (Teleostei: Siluriformes: Ariidae) of Madagascar, with the description of two new species. Occas. Pap. Mus. Zool. Univ. Mich. No. 735: 1-21.

Asterorhombus filifer Hensley & Randall, 2003

Hensley, D. A. & J. E. Randall. 2003. A new flatfish of the Indo-Pacific genus Asterorhombus (Pleuronectiformes: Bothidae). Smithiana, Publ. in Aquatic Biodiversity Spec. Publ. 2: Abstr. + 1-9.

Astyanax clavitaeniatus Garutti, 2003

Garutti, V. 2003. Revalidação de Astyanax rupununi Fowler, 1914 (Teleostei, Characidae) e descrição de duas espécies novas para o gênero. Pap. Avulsos Zool., S. Paulo v. 43 (no. 1): 1-9.

Astyanax pynandi Casciotta, Almirón, Bechara, Roux & Ruiz Diaz, 2003

Casciotta, J. R., A. E. Almirón, J. A. Bechara, J. P. Roux, & F. Ruiz Diaz. 2003. Astyanax pynandi sp. n. (Characiformes, Characidae) from the Estreros del Iberá wetland, Argentina. Rev. Suisse Zool. v. 110 (no. 4): 807-816.

Astyanax saguazu Casciotta, Almirón & Azpelicueta, 2003

Casciotta, J. R., A. E. Almirón & M. de las M. Azpelicueta. 2003. A new species of Astyanax from río Uruguay basin, Argentina (Characiformes: Characidae). Ichthyol. Explor. Freshwaters v. 14 (no. 4): 329-334.

Astyanax siapae Garutti, 2003

Garutti, V. 2003. Revalidação de Astyanax rupununi Fowler, 1914 (Teleostei, Characidae) e descrição de duas espécies novas para o gênero. Pap. Avulsos Zool., S. Paulo v. 43 (no. 1): 1-9.

Astyanax tupi Azpelicueta, Mirande, Almirón & Casciotta, 2003

Azpelicueta, M., J. M. Mirande, A. E. Almirón & J. R. Casciotta. 2003. A new species of Astyanax (Characiformes, Characidae) from Paraná river basin in Argentina. Rev. Mus. La Plata v. 15 (no. 166): 1-12.

Astyanax turmalinensis Triques, Vono & Caiafa, 2003

Triques, M. L., V. Vono & E. V. Caiafa. 2003. Astyanax turmalinensis, a new species from the Rio Jequitinhonha basin, Minas Gerais, Brazil (Characiformes: Characidae: Tetragonopterinae). Aqua, J. Ichthy. Aquat. Biol. v. 7 (no. 4): 145-150.

Atractodenchelys robinsorum Karmovskaya, 2003

Karmovskaya, E. S. 2003. New records of synaphobranchid eels (Synaphobranchidae, Anguilliformes) collected off New Caledonia and adjacent regions, with description of a new species of Atractodenchelys. Voprosy Ikhtiol. v. 43 (no. 4): 437-446.

Aulonocara koningsi Tawil, 2003

Tawil, P. 2003. Aulonocara koningsi n. sp., un cichlidé nouveau du lac Malawi apparenté à Aulonocara stuartgranti (Pisces: Teleostei: Cichlidae). L'an Cichlidé v. 3: 89-98.

Australoheros scitulus Říčan & Kullander, 2003

Říčan, O. & S. O. Kullander. 2003. 'Cichlasoma' scitulum: a new species of cichlid fish from the Río de La Plata region in Argentina, Brazil, and Uruguay. Copeia 2003 (no. 4): 794-802.

Brachyhypopomus jureiae Triques & Khamis, 2003

Triques, M. L. & D. K. Khamis. 2003. Brachyhypopomus jureiae, a new species of freshwater Neotropical electric fish (Teleostei: Gymnotiformes: Hypopomidae) from a coastal stream of southeastern Brazil. Lundiana v. 4 (no. 1): 61-64.

Bryconamericus andresoi Román-Valencia, 2003