Astyanax lacustris ( Lütken, 1875 )

Reia, Lais, S. da Costa e Silva, Gabriel, Garcia-Ayala, James R., P. F. Vicensotto, Ana Maria & Benine, Ricardo C., 2020, Ichthyofauna of the ribeirão Sucuri, a tributary of the rio Tietê, upper rio Paraná basin, southeastern Brazil, Check List 16 (3), pp. 711-728: 715

publication ID

http://doi.org/ 10.15560/16.3.711

persistent identifier

http://treatment.plazi.org/id/03A5878E-5E16-FFB2-78CD-FA04361F5D15

treatment provided by

Marcus

scientific name

Astyanax lacustris ( Lütken, 1875 )
status

 

Astyanax lacustris ( Lütken, 1875)  

Figure 3L

Original description. Tetragonopterus lacustris Lütken 1875: 131   .

Material examined. BRAZIL • 1, 55.6 mm SL; São Paulo state, Pongaí, Córrego Santa Rosa ; 21°46′29″S, 049°23′34″W; 12 May 2018; leg. Silva G.S.C. and Reia L. ( LBP 26479 View Materials ) GoogleMaps   1, 59.3 mm SL; São Paulo state, Pon- gaí, Córrego Zanata ; 21°47′02″S, 049°22′44″W; 12 May 2018; leg. Silva G.S.C. and Reia L. ( LBP 26487 View Materials ) GoogleMaps   1, 31.1 mm SL; São Paulo state, Pongaí, Ribeirão Sucurizi- nho; 21°43′39″S, 049°18′54″W; 12 May 2018; leg. Silva G.S.C. and Reia L. ( LBP 26527 View Materials ) GoogleMaps   4, 39.0− 66.2 mm SL; São Paulo state, Pongaí, Córrego da Mina ; 21°43′45″S, 049°21′29″W; 24 May 2018; leg. Silva G.S.C. and Reia L. ( LBP 26613 View Materials ) GoogleMaps   .

Identification. Bodydeep;mouthterminal;premaxillary

teeth in two rows, inner row with five four- to pentacus- pidate teeth, outer row with four tricuspidate teeth; max- illa toothless; dentary with four anteriormost teeth larger, tetra- to pentacuspidate. Lateral line complete with 35 to 37 perforated scales; six or seven horizontal scale rows above lateral line; five or six horizontal scale rows be- low lateral line. Overall body coloration silver; two verti- cal conspicuous dark humeral blotches, anterior humeral blotch overlapped by another markedly horizontally oval blotch; caudal peduncle with horizontal oval dark blotch extending into middle caudal-fin rays; dorsal portion of eyes and fins yellowish.