Eigenmannia Macuxi (Eigenmannia macuxi) is a ray-finned fish of the family Sternopygidae. It inhabits freshwater waters. This species can reach a maximum total length of 13.2 cm. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms.
Anal soft rays: 166 - 219. This species is distinguished from all its congeners by the following set of characters: lateral line stripe extending from first perforated lateral line scale to the distal portion of caudal filament; with superior midlateral stripe with origin posterior to end of body cavity; anal-fin hyaline; caudal filament corresponding to 15.2-43.1% LEA; mouth subterminal; pectoral-fin rays ii,14-16; A 166-219; scale rows above lateral line at vertical through posterior tip of pectoral fin 10-13; lateral line scales 100-128; premaxillary teeth 22-28; dentary teeth 19-23; endopterygoid teeth 7-10; depth of posterodorsal expansion on infraorbitals 1 + 2 half as long as infraorbitals 1 + 2 length; basibranchial 1 unossified; precaudal vertebrae 13; length of coronomeckelian bone corresponding to 20% of Meckel's cartilage length .Cross section: compressed.
Behavioural data for Eigenmannia Macuxi is currently being reviewed.
Freshwater; benthopelagic. Tropical South America: Brazil.
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