9 Small Fish That Do Serious Damage
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9 Small Fish That Do Serious Damage

August 18, 2019

From poisonous marine creatures to fish that
pack a powerful bite, here are 9 small fish that do serious damage:
Number 9 Boxfish Boxfishes may be small but that doesn’t
mean they’re easy prey. In fact, few marine predators can actually
eat adult boxfishes. This is because, whenever threatened, these
fish can secrete toxins from their skin which act as a chemical defense mechanism. The mucus secreted from the skin of some members
of the boxfish family contains pahutoxin, a water-soluble, crystalline chemical toxin. This is unique among known fish poisons and
can break down or destroy red blood cells. When the toxic mucus is released, it dissolves
quickly negatively affecting fish in the surrounding area. Pahutoxin can be deadly for various biological
systems and even other boxfishes aren’t immune to it. Number 8 Acanthuridae
The Acanthuridae family contains more than 86 extant species of unicornfish, tangs and
surgeonfish. Many of them are brightly colored and therefore
a popular addition to aquariums all over the world. These marine fish typically inhabit tropical
seas and they’re most common around coral reefs. Most Acanthuridae species are small with lengths
of 6 to 15.5 inches. One distinctive feature of the family makes
these fishes quite dangerous. On either side of the tail, they have scalpel-like
spines which are extremely sharp. These naturally-evolved switchblades can act
as a defense mechanism against potential intruders. Some species have additional features that
make them even more dangerous. The striped surgeonfish, for example, must
be handled with extra care as its caudal spine is venomous. Number 7 Red Lionfish
Lionfish are known as fish that can do serious damage because of their venomous fin rays
that deliver painful puncture wounds. The venom is quite potent and, on rare occasions,
can be fatal for humans. These fish are easily recognizable by their
zebra-like stripes, enlarged pectoral fins and elongated dorsal fin spines. Whenever the lionfish feels threatened it
will spread and present its fins before attacking with the dorsal spines. One common species is the red lionfish, which
grows about 12 inches long and features red, white and brown stripes on its body. The red lionfish has been designated as an
invasive species in the Mediterranean Sea, Caribbean Sea and the West Atlantic Ocean. The lack of natural predators has enabled
the red lionfish to basically decimate local reef fishes in the regions it inhabits. For humans the symptoms of lionfish envenomation
include extreme pain in the affected area, nausea, dizziness, headaches, fever or breathing
difficulties. In rare cases it can cause temporary paralysis
of the limbs, heart failure and even bath. Number 6 Piranha
No list of dangerous fish is complete without the blood thirsty piranha. There are over 60 piranha species found in
river systems ranging from northern Argentina to Colombia. Piranhas have deep bodies, saw-edged bellies,
blunt heads, incredibly strong jaws and razor-sharp interlocking teeth. Most species rarely exceed 2 feet in length. During the dry season, when the water is low,
groups of piranhas called shoals converge in feeding frenzies to take on large prey. These groups can sometimes consist of more
than 100 piranhas each charging in to tear a chunk of flesh off their prey. Piranhas are also known to be attracted to
blood in the water. Attacks on humans have occurred most notably
in Brazil, Bolivia and Argentina. In 2011, a drunken teenage boy from the town
of Rosario del Yalta, in Bolivia, jumped out of a canoe into a piranha infested river. The teen was almost eaten alive and later
died from excessive bleeding. Number 5 Pufferfish
Also known as blowfish or balloonfish, pufferfish are among the most poisonous vertebrates in
the world. There are around 90 species in the Tetraodontidae
family and most of them are small to medium in size. They’re found in warm and temperate regions
around the world, usually in the sea but also in brackish or fresh water, in some cases. They’ve several defense mechanisms. Pufferfish have excellent eyesight and can
use their tail fins as rudders to generate sudden bursts of speed. Their best known adaptation for survival is
its ability to fill its highly elastic stomach with air or water until the entire fish becomes
almost spherical in shape. Pufferfish have sharp spines all over their
body and these become visible when it’s inflated. Predators that catch the pufferfish before
or during inflation may choke to bath. However, the most important defense mechanism
is the tetrodotoxin, or TTX, which can be present in its liver, ovaries, intestines
or skin. For people, this neurotoxin can be deadly. Poisoning symptoms include vomiting, dizziness
as well as numbing and prickling over the body. It’s followed by decreased blood pressure,
rapid heart rate and muscle paralysis. As the diaphragm muscle becomes paralyzed,
the victim stops breathing. Number 4 Stonefish
The stonefish is one of the most venomous fish known to man. These creatures live in mud flats and estuaries
among rocks or coral formations in the coastal regions of the Indo-Pacific. The stonefish draws its name from its appearance
which seamlessly blends with the fish’s surrounding environment. They’ve thick bodies with large heads and
mouths and bumpy skin covered with wart-like lumps and fleshy flaps. When resting, unmoving on the sea floor, it’s
very difficult to detect. Swimmers who don’t notice these creatures
may inadvertently step on them, which can trigger a painful and even deadly sting. Glands which are located at the bottom of
the fish’s dorsal fin spines secrete potent neurotoxins. As the swimmer steps on it, the fish may inject
a quantity of venom that’s proportional to the pressure applied to it. Stings may also occur on beaches, as these
fish can live out of water for up to 24 hours. An additional defensive feature was revealed
by a 2018 study. According to the report, stonefish can extend
a lachrymal saber, which is a sharp specialized spine, whenever they feel threatened. If left untreated, the sting of a stonefish
can be fatal. Hot water and vinegar should be applied to
the affected area, followed by immediate treatment with anti-venom. Number 3 Stargazer
The stargazer has been called ‘the meanest thing in creation’. In addition to their terrifying appearance,
some species can deliver venom as well as electric shocks. Stargazers draw their name from the fact that
their eyes are placed on top of their heads, as if they’re ‘looking at the stars’. They can be found all over the world in deep
and shallow salt waters. Stargazers have massive heads, large upward-facing
mouths and their bodies can grow to almost 3ft, for the giant stargazer. Their killing technique relies on ambush and
they have weapons in their arsenal that can cause some serious damage. Stargazers camouflage themselves in the sand
and leap upwards to ambush prey. Some species have a worm-shaped lure, that
grows out of the floors of their mouths and which they can wiggle in order to attract
prey. Above their pectoral fins, stargazers have
two large venomous spines. Stargazer species from the Astroscopus or
Uranoscopus genera can also deliver electric shocks, in addition to venom. All these vicious adaptations are why stargazers
are sometimes known locally as the ‘mother-in-law fish’. Number 2 Candiru
Also known as the toothpick or vampire fish, this parasitic catfish is native to the Amazon
Basin and found in Ecuador, Peru, Colombia, Brazil and Bolivia. The smaller candiru species are known for
their tendency of invading and parasitizing the human urethra. Once it enters the passage, the candiru erects
the short spines on its gill covers and may cause inflammation, bleeding and even bath
to its victim. One report from the 1800s, talks about a Brazilian
physician who examined several male patients whose penises had been amputated following
parasitism by candiru. In 1891, naturalist Paul Le Cointe describes
an incident involving a candiru that became lodged in the vaginal canal of its victim. Le Cointe removed the candiru himself. First he pushed it forward to disengage its
spikes and then turned it around and took it out head first. One of the most persistent reports about the
candiru defies the laws of simple fluid physics. Some locals from the Amazon Basin claim that
it’s dangerous to urinate in rivers known for the presence of candiru. It is said that the fish can jump out of the
water and ascend the length of the you’re in column to enter the urethra. Even though fluid mechanics makes this impossible,
it remains one of the most common myths regarding the candiru. Number 1 Sheepshead
This deep-bodied flat fish is commonly found on the Gulf and the Atlantic coasts of North
America. The sheepshead has a silver body with 5 to
7 broad, dark vertical bands. It has a short mouth, finely serrated scales
and sharp dorsal spines. The sheepshead can reach 35 inches in length
and weigh more than 25 pounds, although such proportions are rare. The most unusual aspect about this species
is its dentition which is eerily similar to that of human beings. Its front teeth resemble human incisors while
its back teeth look like human molars. This dental pattern enables the sheepshead
to crush and grind its prey. It can chew through heavily-armored prey like
echinoderms, oysters or barnacles. The sheepshead is also quite cunning as it’s
known to steal bait from fishing hooks.


  • Reply They will Kill You September 25, 2018 at 8:16 am

    Have you EVER encountered one of these fish?!

  • Reply Chin Yiren May 24, 2019 at 1:40 pm

    can you do top ten most dangerous jellyfish

  • Reply Chewy Ltd May 25, 2019 at 2:30 am

    LOL they will kill you as a pet shop employee here is your answers
    9) Boxfish yes
    8) Tangs yes of course
    7) Red Lionfish yes of course
    6) Piranha yes have dealt with 4 different species (Each have their own different habits)
    5) Puffer fish have eaten them as yes been around a few freshwater types
    4) Stone fish yes of course
    3) Star Gazer (no not available in the pet trade in my country)
    2) Candiru no but would love to study them in a lab there are several related species in the Amazon there is the giant Candiru is very nasty do not go swimming in amazon waters at night
    1) Sheeps Head NO

  • Reply Richard Mancha May 28, 2019 at 8:18 pm

    Wow,that's alot of damage!

  • Reply plantz May 30, 2019 at 8:46 am

    Wrong, The Penis fish is a legend not a fact. There are no actual cases of this just stories. Think about it could a fish get in you ( especially that route) without you stopping it. The fish is real ,what it does not so much.

  • Reply But I’m not a gamer June 13, 2019 at 1:00 am

    Me: omg is that who I think it is
    Me: ICE JJ FISH!!!

  • Reply PUFFY ADDERSON'S Fake News trolling CHANNEL!!! June 17, 2019 at 12:25 pm

    human heads are a little like FISH!

  • Reply Tony Medina June 30, 2019 at 11:19 pm

    Geez,that lion fish will throw every pain at you, But the kitchen sink. Okaaaay forgot about the Candaroo aka vampire fish aka kitchen sink.

  • Reply Robert Fletcher July 7, 2019 at 8:40 pm

    Sensationalism, not coming back again.

  • Reply Tess Craig July 14, 2019 at 8:09 am

    I've seen that River on naked and afraid

  • Reply Patricia Jankey July 17, 2019 at 6:23 pm

    Omg the Stargazer looks just like my Mother in law.

  • Reply Branden Drew July 19, 2019 at 3:16 pm


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