“…Thus, the characters of fin shape and colour are related to sexual maturation in males and, once established, remain throughout adulthood rather than being lost or undergoing regression. In some Hyphessobrycon spp., including H. igneus, males have hooks on the pelvic and anal fins (Lima & Moreira, 2003;Carvalho, 2006;Garcia-Alzate & Román-Valencia, 2008;Garcia-Alzate et al, 2010). In other Characidae species, males lack hooks on their fins (Bertaco & Carvalho, 2005;Garcia-Alzate & Román-Valencia, 2008), have hooks only on their anal fin (Bertaco et al, 2007;Garcia-Alzate & Román-Valencia, 2008;Carvalho, 2011), have hooks on three or more ( , 0-4; , 5-9; , 10-14; , 15-19; , >20) distinct fins (Bertaco & Malabarba, 2005;Garcia-Alzate & Román-Valencia, 2008;Miquelarena & López, 2010), or have hooks on all their fins (Miquelarena & López, 2006;Bertaco et al, 2007;Camelier & Zanata, 2014).…”