Opisthoproctidae

Black mirrorbelly

Monacoa niger

Opisthoproctid Fish beneath the Niger Basin

• Black
• Regional distribution
• Marine fish
• Pacific Ocean
• Oceania
• Deep-bodied
• Small

Monacoa niger, also known as the black mirrorbelly, is a species of fish in the family Opisthoproctidae. It is mainly found in the eastern-central Pacific Ocean.