Abstract
http://dx.doi.org/10.5007/2175-7925.2016v29n1p55Espécimes recentemente coletados de Australoheros mattosi em cursos d’água próximos à localidade-tipo (drenagem do rio das Velhas, incluindo alto rio Cipó, Minas Gerais, Brasil) revelaram novos dados da coloração de adultos vivos (marcas iridescentes na base das nadadeiras dorsal e anal e coloração avermelhada a hialina-acinzentada na margem distal da nadadeira caudal), variações populacionais (peril dorsal da cabeça e coloração de fundo da cabeça) e ontogenéticas (variação na posição da narina, peril ventral da cabeça, escamas nas bochechas e nas nadadeiras anal e dorsal, mancha na margem posterior do opérculo e coloração de fundo em álcool) da morfologia externa e novos dados morfométricos(distância pélvico-peitoral, posição do olho em relação à horizontal ao nível da sínise e 5º ceratobranquial) de indivíduos adultos.
Highlights
Australoheros (ŘÍČAN; KULLANDER, 2006) was erected to include a monophyletic assemblage of beautifully colored species and the live color pattern may be useful to discern between species (e.g. OTTONI, 2013; OTTONI et al, 2014; OTTONI; SCHINDLER, 2014, among others)
Dorsal head proile very slightly convex to origin of dorsal-fin in small juveniles, and it progressively turns into a straight oblique backward directed snout proile to vertical through middle of eye diameter, a slight to strong hump emerges to dorsal-in
On dorsal-in base, proile nearly straight slightly downward oblique from 2nd to last spine, convex to end of dorsal base
Summary
Australoheros (ŘÍČAN; KULLANDER, 2006) was erected to include a monophyletic assemblage of beautifully colored species and the live color pattern may be useful to discern between species (e.g. OTTONI, 2013; OTTONI et al, 2014; OTTONI; SCHINDLER, 2014, among others). Australoheros mattosi Ottoni, 2012 was described (9 specimens, 43.0-106.3 mm SL) from Das Velhas River and Paraopeba River; adult data and live color pattern are not well known currently. The population of Do Almoço Creek is about 110 km upstream through Das Velhas River from type locality population. The other sampled population is at the PNSC and Zé Coelho Creek, just at the entrance of the Serra do Cipó Brazilian National Park (PNSC), about 470 km from type locality population through water low, out of which 280 km through the Cipó River. Further specimens with the usually accepted standard body size are available
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