Doncella, Pseudoplatystoma is a South American catfish that belongs to the family Pimelodidae. The photo shows one of doncella species; Pseudoplatystoma fasciatum, which is known as “tiger shovelnose catfish”. Doncellas typically inhabit major South American rivers, lakes, flooded forests and other freshwater habitats. These fishes are important as a food fish in addition to the demand they enjoy in aquarium …