Rhamphichthyidae

Hypopygus cryptogenes

Hypopygus cryptogenes

• Tropical
• Southern Hemisphere
• Regional distribution
• Freshwater fish
• South America
• Small
• Tropical fish

Hypopygus cryptogenes is a species of bluntnose knifefish endemic to Brazil where it is found in the Rio Negro basin. This species can reach a total length of up to 15 cm (5.9 in). It is the only member of the genus Stegostenopos according to FishBase, but studies have shown that it belongs in Hypopygus (making Stegostenopos a junior synonym) and this is followed by the Catalog of Fishes.