Appendix (Fig 1) Identification and Classification Guide: Local name: Shyou Scientific name: Hopleryhtrinus unitaeniatus Erythrinus erythrinus Freshwater pelargic species. Is a predaceous omnivore of open waters. Feeds on aquatic invertebrates and to lesser degree, on fish. Not evaluated. Important in fisheries and aquariums. Ecology: Status / Importance: Local name: Carachama Scientific name: Status / Importance: Liposarcus pardalis (Common Pleco) Pseudorinelepis genibarbis Pterygoplichthys pardalis Ancistrus heterorhynchus demersal; freshwater; pH range: 7.00 - 7.50; dH range: 10.0 - 20.0. Facultative air breather.Lower, middle and upper Amazon River basin. Introduced to countries outside its native range. River basin. Bottom feeder (debris). Not evaluated. Fisheries: minor commercial; aquarium: commercial Local name: Curuhuara Scientific name: colossoma macropomum Ecology: Benthopelagic; freshwater; pH range: 5.0 - 7.8; dH range: ? - 20; depth range 5 - ? m This species is usually solitary. Adults stay in flooded forests during first 5 months of flooding. They concentrate of allochthonous fruits during the flood in the Amazon switch to autochthonous planktonic Crustacea at low waters. Young and juveniles live in black waters of flood plains until their sexual maturity. Feeds on zooplankton, insects, snails and decaying plants. Not evaluated. Ecology: Status / Importance: 48 Local name: Bujurqui Aequidens tetramerus Chaetobrachus flavescens Cichlasoma amazonarum benthopelagic; freshwater; pH range: 6.00 - 7.00; dH range: 15.0. Occurs Ecology: in coastal swamps and flooded grounds. South America: Amazon River basin, from the Ucayali, Huallaga, Amazon and Yavarí River drainages in Peru. Omnivorous. Status /Importance: Not evaluated. fisheries: minor commercial; aquarium: commercial Scientific name: Local name: Lisa Scientific name: Schizodon fasciatus Ecology: Status / Importance: Benthopelagic; potamodromous freshwater; pH range: 5.5 - 7.5; dH range: ? – 25. Is a strict herbivore which feeds on plant debris, leaves and algae but is reported as an omnivore in. The males are mature at 18 cm and the females at 22 cm. In the Amazon, this genus are gregarious and undergo migration Not evaluated. fisheries: commercial; aquarium: commercial Local name: Fasaco Scientific name: Hoplias malabaricus Ecology: Fish eater Status / Importance: Not evaluated. fisheries: commercial; aquarium: commercial 49 Local name: Sábalo Cola negra / Roja Scientific name: Brycon melanopterus Brycon cephalus Benthopelagic; potamodromous freshwater; pH range: 6.0 - 7.5; dH range: ? – 20. South America: Upper Amazon River basin in Peru and Bolivia. Not evaluated. aquarium: commercial Ecology: Status / Importance: Local name: Piraña blanca / roja Scientific name: Status / Importance: Serrasalmus rhombeus Pygocentrus nattereri Pelagic; freshwater; pH range: 5.5 - 7.5; dH range: ? – 20. Common in creeks and interconnected ponds. influences distribution and feeding of other fish and in areas of high primary production in Rio Machado and Rio Negro. Adults feed mainly at dusk and dawn. Piranhas feed on small fish, crabs, mammals, lizards and coleopteran insects, but certain piranha species also consume large quantities of seeds. Piranhas will also attack and consume much larger fish if the latter are held captive in nets. Teeth replacement on alternating sides of jaw allows continuous feeding. Has a highly evolved auditory capacity and a 'lurking', then 'dashing' behaviour during daytime. Shows hierarchies within small schools. Not evaluated. fisheries: commercial; aquarium: commercial Local name: Boquichico Scientific name: Prochilodus nigricans Ecology: Benthopelagic; potamodromous. Status / Importance: Not evaluated. Fisheries: commercial; aquaculture: commercial; aquarium: commercial Ecology: 50 Local name: Sardinia Scientific name: Triportheus angulatus Ecology: Benthopelagic; potamodromous. freshwater; pH range: 5.0 - 9.0; depth range 0 - 5 m. Occurs over sandy bottoms in rivers. Usually forms schools. Mainly diurnal. Feeds on the fruits and seeds of Moraceae, Myrtaceae, Euphorbiaceae; Coleoptera, Orthoptera, Lepidoptera, and on plankton, nekton, and crustaceans. Not evaluated. Fisheries: subsistence fisheries; bait: occasionally Status / Importance: 51