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Name : Sarcastic fringehead ( Neoclinus blanchardi )

Where it subsist : From San Francisco , to Baja California , Mexico

A fringhead fish rests on a rocky reef facing the camera with its mouth wide open.

Sarcastic fringeheads are extremely aggressive and fight by yawning at each other.

What it eat : Small prey such as Pisces , crustaceans , and squid eggs

Why it ’s awe-inspiring : Sarcastic fringeheads are best roll in the hay for their silly name , utmost aggression and unconventional combat elan — essentially , angrily yawning at each other .

Usually found on rocky reef or sandy seabeds between around 9 and 240 invertebrate foot ( 3 to 73 meters ) below the water ’s surface , these lonesome fish make their plate inside shells , clam burrows , tilt crevices , " or even in empty cans and bottle if there is defilement , " according to a 2014 AAASarticle .

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Despite being small — ordinarily around 3 to 8 inches ( 7.5 to 20 centimeters ) long , although they can grow to 12 inches ( 30 cm )   — they can be extremely belligerent andattackalmost anything that roam too close , including frogman , grant to theAquarium of the Pacificin California .

Sarcastic fringeheads push for authority in a ( actual ) jaw - discharge presentation 😮 Do n’t lose # SuperNaturalSeries , from @JimCameron and narrated by Benedict Cumberbatch , now streaming on @DisneyPlus . pic.twitter.com/89BQi3PAarSeptember 23 , 2022

If a femalechoosesa male person to be her Paraguay tea , she lays her orchis in his den for him to fertilize . He ’s then responsible for protecting the ball until the young hatch .

A rattail deep sea fish swims close the sea floor with two parasitic copepods attached to its head.

Related : Fish moms that hold young in their mouths sometimes eat their baby for breakfast

This makes these animals extremely territorial , and there is intense rivalry between males for select pip in which to set up their home : if they do n’t have a burrow , they wo n’t be able to reproduce .

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When fighting over territory , the Pisces the Fishes prove to intimidate their opposer by opening their jaw wide to exhibit the brilliant colors within . " The mouth ’s intimidating coloration , combined with the uttermost nature of its size of it ( which may be as much as four times its shut size ) allows the larger male to found ascendancy over the smaller , " according to the preservation organizationOceana .

The oddity of an octopus riding a shark.

If the competitor is n’t scare off by the elephantine , colourful backtalk presentation , the duo will launch into mouth - to - mouth combat , press their wide mouths together . " While this may look like the fish are kissing , they are in fact sharply defending their territory from each other , " Inamura sound out . The swelled the fish ’s mouth , the more chance it has of win this struggle .

These over - the - top presentation have garner the fish the " sarcastic " part of their name .

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Photo shows an egg hatching out of a �genital pore� in a snail�s neck.

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