Whalefishes, bignoses and tapetails - these three groups of deep-sea fishes couldn't look more different. The whalefishes (Cetomimidae) have whale-shaped bodies with disproportionately large mouths, tiny eyes, no scales and furrowed lateral lines - narrow organs on a fish's flanks that allow it to sense water pressure.
The tapetails (Mirapinnidae) are very different - they also lack scales but they have no lateral lines. They have sharply angled mouths that give them a comical overbite and long tail streamers that extend to nine times the length of their bodies.
The bignoses (…
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