did you know there's no such thing as a fish yes really it's a fact first brought to public attention by the british quiz show qi each species of fish is so different to every other type of fish that's simply put the word fish to describe all of them is scientifically inaccurate because they're all too different to fit under one umbrella for example a starfish has more dna in common with a giraffe than it has with any other fish because of that there are all kinds of crazy fish you won't believe these are fish you won't
believe actually exist [Music] number 15 the koi fish koi fish are fairly familiar site in ornamental ponds all over the world these fish are prized for their bright color and patterning as well as the extraordinary sizes they can grow to koi carb can grow as long as three feet if they have enough space and a good diet speaking of diets what do these monster-sized fishes actually eat well we've seen a video of a massive koi gobbling down whole eels as if it was chucking back popcorn and these big fish generally find their food at the
bottom of the pond or lake they'll even usually eat other fish fish eggs insects and algae they use their twin barbells that's the things that look like a twiddly mustache in order to detect the food they're looking for these sensory organs are a bit like a cat's whiskers but with taste buds attached so they can find food in the murky depths koi have been swimming around ponds since back to the 4th century in china when they were first domesticated and incredibly these fish can often reach at least 50 years old if they're kept in optimum
conditions koi regularly outlived their owners the oldest koi on record was a whopping 226 years old but how exactly anyone can keep track of that is a bit of a mystery since that's more than twice the age of even really super old people before we go on like this video smash the subscribe button and click the notification bell right now or this centipede will crawl on your face when you're sleeping now it's time for the sweet topic there's no denying it the anglerfish just has to be one of the weirdest fish in the world just
look at the thing it looks like something from guardians of the galaxy but it's very real the depths of the world's oceans are truly stranger than fiction these things dwell at the lightless bottom of the ocean which is one of the reasons why they have a dangling light from their head the other reason why that light is there is to serve as a lure for prey not only the females have these the glowing light is attractive to prey who then swim towards it seeking relief from the darkness like a moth toward a flame but the
anglerfish then reveals itself munching down on its poor victim not only is the anglerfish creepy looking but it's also a vicious trickster the loki of the seas comment down below with the hashtag sweet topic and let us know your opinion in relation to what we just showed you on the screen and with that let's keep things moving number 14 hairy frog fish a hairy fish well that's just weird these fuzzy looking creatures although they appear hairy actually aren't sorry to blow that myth out of the water apparently their hairs are actually appendages or spines that
this weird creature uses in order to camouflage itself against seaweed and coral the hairy frogfish hangs out in warm waters and mostly just hides in plain sight it's the master of disguise not only can it make itself look like an innocuous piece of seaweed but it can also change color in order to blend in with the background these fuzz balls don't swim they actually walk the frog fish strolls around on the sea floor in search of food when they do find something tasty to eat these funny fish simply open their mouth really wide in order
to suck in their prey and then they swallow it whole they're also really good at fishing these sea creatures have an unusual technique in order to lure in their prey they have one really long spine that looks like a worm so they waggle it around in front of a target like bait drawing the prey close enough to gobble it down surprisingly for a smaller fish the hairy frog fish is able to swallow a meal that's up to twice its size turns out these guys have a super flexible stomach weird number 13. fangtooth fish now you
can probably guess why this fish has been given this particular name the fishy horror movie monster has some pretty mean looking fangs but despite its menacing appearance the fangtooth fish is only dinky measuring up to about 6 inches when they're fully grown so that's a relief for everyone although you'll probably never come across one yourself and even if you did this scary-faced fish is more likely to give you a jump scare than anything more painful they also live really deep down in the ocean at depths between sixteen hundred and sixteen 000 feet or more hanging
out deeper during the day and going into shallower water at night in order to feed living at such depths the fangtooth actually has poor vision but it has a super advanced system in order to sense movements and vibrations in the water around it this provides the fish an ability to pick out and chomp down on its prey despite not being able to see it those fangs are actually pretty lethal though the fangtooth itself has had to develop a pretty nifty adaptation so that it doesn't accidentally poke holes in its own brain when it closes its
mouth they have a special sort of pouch in their head in order to accommodate their fangs so that's fortunate for them or perhaps they would have died out pretty fast long ago number 12 white margin stargazer now this funny looking guy is most definitely meaner than he appears the white margin stargazer fish may sound like a hopeless romantic spending his time gazing towards the heavens but don't let the name or indeed the goofy expression fool you the stargazer is named such because the unique position of its eyes dugay is towards the stars however this fish
is a menace and his eyes are positioned like that so he can hide out undetected in ambushes prey the white margin stargazer is able to burrow itself into the sand or silt leaving only its eyes visible and it's one of the great masters of disguise in all of the world's oceans living mainly in the indo-pacific ocean the white margin stargazer eats octopus squid and a whole lot of other fish now you might think that this ability to camouflage itself would be the stargazer's superpower however this fish has more than one trick up its sleeve these
guys are poisonous and they can deliver electric shock as well ouch the stargazer has two spines equipped with venom that it uses to employ in order to capture its unfortunate prey and if that isn't enough these fish can produce their own power delivering an electric charge of up to 50 volts how shocking number 11 the yellow-headed fish these fish hang out in sandy areas around reefs to stay safe in these open areas the yellow-headed jaw fish digs itself a burrow in the sand spending their time waiting around outside their burrows in order to eat any
kind of passing food but die for cover when anything big and dangerous approaches it's a risky business but these fish seem to have it down to a fine art the jaw fish is named obviously for its jaw it has an oversized and extremely useful big mouth the jawfish's burrow takes a whole lot of maintenance though you know if you ever dug a hole at the beach just how often the sides keep collapsing in and filling the hole back up well that's basically the daily grind of the jawfish this sisyphean workload requires constant upkeep not only
does the fish use its cake hole for digging that burrow the male of the species keeps fertilized eggs in their mouth these funny fish can be spotted aerating the eggs which basically means spitting them out and collecting them up again number 10 yellow box fish yep the yellow box fish you know is in fact shaped like a box and it is in fact yellow as well now i just don't know how they keep coming up with these crazy names you know it's actually a pretty cool looking fish though if you like that kind of thing
and since you're here i guess that you do they're bright yellow with black polka dots all over quite the snappy dresser but a word of advice for the other fishes if you do see one of these guys don't get it stressed out because they're known to release a deadly toxin when they're upset and this toxin can actually kill other fish in nearby waters apparently the funky shape of the boxfish was so fascinating to the designers that mercedes benz that back in 2006 they built their bionic concept car inspired by the fish's unusual shape turns out
however that the fish is not agile because of its shape but rather the distinct movement of its fins in combination with its unwieldy body so i'm not so sure how successful a wobbly old box shape would be once it was on wheels rather than floating in the water but keep up the good work mercedes there's plenty more fish in the sea after all number nine the stone fish now here's a fish that can put a serious downer on an afternoon's paddle in the sea that's for sure the next time you take a dip in the
tropical waters of the indo-pacific and really we all do very often don't we you need to be careful where you step the stone fish is a master of disguise and one of the deadliest animals on earth it produces a particularly nasty venom that's often fatal to humans unless an anti-venom can be administered in time these super dangerous guys like to hide out on the ocean floor looking just like a rock but don't be fooled they're definitely up to no good the stonefish actually has 13 venomous spines along its back and if anything even just brushes
against these then the venom can be released if you do accidentally step on a stone fish it will sting you and that nasty sting is going to be extremely painful and need immediate medical attention the venom from a stone fish can cause swelling pain tissue death and cardiac arrest so that's a whole barrel of laughs then if you simply must venture into the water where these bad ass fish hang out then please by all means be careful wear shoes watch where you step and cross your fingers number eight the asian sheep's head rass the asian
sheepshead ras is also known as the kubadai these fish are definitely amongst the more weird looking of sea dwelling creatures but beneath all that kooky appearance these fish have an awesome ability as well they live in groups of females with one dominant male so if another male does turn up there's always a fight which is going to result in the most dominant male taking over the group and if the male is getting a little old or needs an upgrade these fish have a nifty way to get that sorted out so when they reach a certain
age in size these fish can actually change their gender they change from female to male they are able to take themselves off for a few months hanging out in a secret layer during which time the female asian sheep's head rass can transform herself from a smaller fish with ovaries into a massive hulking male fish with big gonads to prove it then the new male is going to likely go and have a punch-up with an older one and take over their role the kubadi's special skills are not actually unique in the fish world but they are
an interesting example of these gender changing abilities other fish often change the other way from male to female but there are some species who are fully hermaphroditic able to reproduce entirely through self-fertilization for their whole lives a clever and useful adaptation in the dangerous depths of the sea number seven blob fish oh just look at these guys with a face like mr magoo or a piece of rude graffiti the poor old blob fish gets a whole bunch of abuse declared by some to be the ugliest animal in the world the blob fish is kind of
fascinating really their features can be eerily human but usually in a more comical way like a grumpy-faced old cartoon grandpa rather than that spooky kind of human face you sometimes see other animals sporting the blob fish has a big gelatinous head with huge lips and small eyes and often a particularly displeased expression you'd probably look a bit cross if people kept making jokes about your face as well these unfortunate fish belong to a family of sea creatures usually known by their common name fathead sculpins they just can't catch a break however the blobfish is perfectly
adapted to where it dwells its gelatinous appearance is the result of having very few bones it lives at depths of up to 2000 feet and the pressure down there would actually crush any other type of body so the blobfish's wobbly body doesn't seem so silly after all does it number six psychedelic frog fish these funky fish live in the coral seas around indonesia and like other frog fish these creatures have some unusual features now like our other frog fish friend these psychedelic frog fish don't actually swim around in the water they hang out at the
bottom and walk on the sea floor this species is also known to use its fins to push itself up off the floor and hop along as well their trippy name comes from the unique patterns on their skin these really are unique as well like a fingerprint the orange and white swirling patterns on a psychedelic frog fish are one-of-a-kind markings that also help to keep these creatures super camouflaged the camouflage helps to keep the frogfish hidden from predators but is also useful when they're out and about waiting to ambush an unsuspecting passing snack the psychedelic frogfish's
future is uncertain climate change and the damage that's being done to coral reefs has made this one of the rarest fish in the world and if things don't improve for the fish and its habitat soon these fascinating creatures could vanish from our seas forever number five the oppa the opa also known as the moon fish has a unique ability it can actually generate its own heat and in the chilly ocean it's got to have some real advantages these fish are orange colored with brighter fins and more pale bodies which fade to a rosy white with
spots on their bellies they grow to about the size of a car tire and are frequently found in the seas around hawaii although they can pop up elsewhere the oppa's ability is all but unique amongst fish they're able to generate and regulate their own body temperature to keep it at about 10 degrees above the surrounding waters this is a particularly clever adaptation as it allows these fish to travel through the icy water while keeping a warm core this does ensure that the opa's swimming ability and vital organs are insulated and therefore unaffected by the cold
water which makes them more efficient and speedy predators although there are a few fish that are able to heat their extremities the opa is the only known fully warm-blooded fish number four the toothpick fish no doubt you'll have heard of this one even if you didn't know what it was called a tiny fish that lives in the amazon river the toothpick fish or kandaru is most famous for being attracted to swimming into and setting up camp in a human being's urethra there are always references to this little fish in movies about the amazon we've all
heard them but interestingly enough there are not actually that many genuine accounts of the pea-loving kandaru actually embedding itself in an unfortunate appendage however the mythology follows it around nonetheless these teeny-weeny fishes are actually amongst the few identified parasitic fish on the planet and when they aren't found dashing up a stream of urine these fish usually prefer to make their home in the snuggly warm gills of other fish where they pitch up their camp by poking out a load of spines in order to hold them in place this is the process that makes them particularly
painful if they end up in a person's more sensitive areas but the host fish does have a nasty experience in store as well the little toothpick is about to nibble a hole and literally suck the blood of its victim the name toothpick does make them sound skinny but it actually means really sharp and pointy as well and here's a note if you do ever find yourself in the tricky situation with a kangaroo swimming up your willy pulling it out pulling it out can result in your junk being all torn up and if it gets all
the way in well it's gonna suck your blood from there so maybe just stay away from the amazon completely number three the goblin shark this deep sea dwelling goblin shark is like the nightmare combination of frightening alien face and squashed dinosaur shark it's actually horrific however nobody should judge something on its appearance that's just not fair so are these guys as scary as they look well with a long snout on the top and a set of very sharp teeth on the bottom this shark does seem quite equipped enough to do some predatory stuff it's got
a weird technique for catching its prey as well the goblin shark can eject its jaws and send them out in a dangerous snapping motion in order to grab the passing prey and then it's just simply going to reel its jaws back in and scoff the catch that's spooky this long-nosed shark is actually and mercifully much more lazy than many other sharks its sluggish behavior does mean that it's not likely to expend a whole lot of energy in a high speed pursuit and given one look at the freaky fish no doubt you would be able to
outswim it on fear alone i'm glad that this one's finished because these fish give me the creeps number two the lionfish this spectacular fish has definitely got a unique style the lionfish has been a big favorite of aquarium owners for many years its frilly fancy looks have captured many fans however the fish is actually a bit of a menace so the lionfish is actually native to the indo-pacific region but lately this ornate ocean dweller has been popping up all over the place and that's definitely a problem now considered an invasive species in the coastal waters
of the united states southeast and the caribbean these fish are doing more harm than good to the delicate ecosystems in those areas the lionfish is a predatory species and since settling into new waters has been systematically scoffing all kinds of creatures that it has no business interfering with in the first place the lionfish is known to be doing untold damage to the balance of saline on the reefs and they eat too many parrotfish which means that with fewer parrotfish to eat it there is too much seaweed going around invasive species are always going to be
a problem but right now with all the other pressures on the marine environment from climate change overfishing and pollution an invading greedy creature hovering up all the food may just be too much to handle number one puffer fish puffer fish are the second most poisonous vertebrate on the planet even in second place though these fish each contain enough deadly tetrodotoxin to kill 30 humans so i reckon that's second place rating is basically irrelevant when it all comes down to it they're named the puffer fish for the weird way that they protect themselves from would-be predators
in the wild they can actually puff themselves up to make it extremely difficult for a predator to keep hold or to sink their teeth in in reality this defense mechanism probably saves the predators lives as often as the puffer fishes because just one nibble can kill although their reputation as a super deadly poisonous fish is extremely well known there are still plenty of people out there who want to eat the thing crazy perhaps but true in japan the fish is actually a delicacy but it absolutely must be prepared by a highly skilled and certified person
because if you make one little wrong tiny cut when preparing the puffer fish whoever eats it is going to be a goner and this is serious business although there's approximately one death per year from ingesting this delicacy these are almost always caused by people who attempt to prepare the fish themselves rather than paying the high restaurant prices for an expert to do it properly what an amazing diverse place the ocean is some of these fish are actually super strange but what else might be lurking out there in the depths what amazing creatures do you think
are still left to be discovered let me know in the comments below also check out the other cool stuff showing up on the screen and i'll see you next time