What physical feature contributes to the Monkfish receiving the common moniker 'allmouth'?

Answer

Most of the whole fish is taken up by its massive mouth.

The monkfish is characterized by a pronounced physical feature related to its feeding strategy, which results in the nickname 'allmouth.' This description pertains to the relative size of the fish's oral cavity compared to its overall body structure. A significant portion of the entire monkfish body mass is comprised solely of its oversized head and mouth apparatus. This massive mouth, equipped with sharp, inward-slanting teeth designed to secure substantial prey, dominates the fish's physical presence, leading to the colloquial reference 'allmouth'.

What physical feature contributes to the Monkfish receiving the common moniker 'allmouth'?
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