Erythrinus erythrinus ( Rainbow Wolf fish )
Type : Characins
Origin :Central and South America
Max. Size : 20 cm
Water Cond. : 5.6 - 7.8 pH
Diet : Carnivore
Misc. : Lives in creeks and marshy zones where it can survive in water with low oxygen levels due to some anatomical modification of its swim bladder which serves as a respiratory appendage