Quick Stats Minimum Tank Size: 1000 Gallons (3785 liters) Care Level: Very Difficult Water Conditions: 5.8-6.8 pH (Soft to Moderately Hard) Temperature: 68-79°F (20-26°C) Maximum Size: 48 inches (122 Centimeters) The redtail catfish (Phractocephalus hemioliopterus), known as the cajaro in Venezuela, and the pirarara in Brazil, is an extremely large freshwater fish. Yet, … [Read more...] about Redtail Catfish – The Care, Feeding, and Breeding of Redtail Catfish