Monkfish (Goosefish)

Monkfish (NOAA Photo Library / CC BY)

Monkfish (Lophiidae) have flattened bodies and very large upturned mouths. Like frogfish (their smaller relatives), the monkfish attracts potential prey by wiggling its first dorsal spine, which has evolved into a thin antenna tipped with a lure. Monkfish can grow up to 1.2 meters (47 inches) in length. However, most species are smaller.

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This supplemental online resource accompanies the book Scuba Diving Hand Signals by Lars Behnke, available on Amazon.