What is "monkeyface"

Monkeyface or monkey-face may refer to:

• Monkeyface prickleback (Cebidichthys violaceus), a North Pacific species of fish
• Appalachian monkeyface (Quadrula sparsa), a North American species of freshwater mussel
• Cumberland monkeyface (Quadrula intermedia), a North American species of freshwater mussel
• Rio Grande monkeyface (Quadrula couchiana), a North American species of freshwater mussel