* With reference to the shape of ancient oil-lamps.
Maximum length 200 cm and maximum weight around 30 kilos. Large and grotesque, they lie on the bottom, superbly camouflaged, and ‘fish’ for their meals by agitating an appendage, something like an angler’s rod, over their mouths. When they open their mouths the little fish which have come to investigate are engulfed. The lower illustration helps to show just how capacious that mouth is.