AgamyxisAgamyxis is a genus of thorny catfishes.SpeciesThere are currently two recognized species in this genus:Agamyxis albomaculatus ''Agamyxis pectinifrons''DistributionThis genus is found in tropical South America.DescriptionBoth species reach about 15 centimetres SL. These species both appear very similar; A. albomaculatus might be slimmer, have more spots and a different pattern on its caudal fin.EcologyThese catfish are able to make sounds by grinding their pectoral fin bones against their shoulder bones. They can live for 17 years.In the aquariumBoth species in this genus are popular in the aquarium trade.