THE PACU
One of the most problematic monster fish
in the United States, these beasts grow to
over 30” and can weigh up to 50 pounds!!
Often sold at Walmart  as “great
companions for cichlids”… There’s two
different kinds of pacu. The black pacu
and the red bellied pacu. If you find yourself
in possession of either one you may want to
give me a ring.  LOL! In order for pacu to
be happy and healthy they need HUGE
confines. Not to mention they’re happiest
in schools. Pacus will mimic piranha for
protection when young. But as they grow,
who’s gonna bother a three foot fifty pound
fish?  For more facts on the black pacu
(the more common one sold) check out
this site, especially the third entry:
http://www.aquahobby.com/gallery/e_pacu.php

  Piaractus brachypomus The Black Pacu
004.JPG

 Colossoma bidens The Red Bellied Pacu

THE OSCAR
The oscar (Astronotus ocellatus) is
commonly sold at pet stores around the
world. While they make great wet pets
they do get big, not only do the get big
but they're very messy. It's important to
give them the space they need and to
have "over-filtered" water. These brutes
stake out large territories in the wild
when they spawn and males will simply
not tolerate each other in small quarters.
Absolute minimum size tank for these
guys is a bare 55 gallon, meaning no
decor. Ideally a single specimen would
be comfortable for life in a 75 gallon.  
You can give them a ping pong ball for
something to play with and you can use
sand or gravel as a substrate. On rare
occasions oscars will grow to 16" but
most will stay around 12"



Silver Arowana
(Osteoglossum bicirrhosum)
The Silver arowana is another large
growing species of fish from the Amazon
basin. They can grow to four feet and also
require large confines. They are graceful
swimmers and are often available to
purchase at your local pet shop. There are
many varieties of arowana but the silver
aro is the most common. Please think
twice before purchasing one of these
eating machines as they too grow at a fast
rate

Silver Arowana (Osteoglossum bicirrhosum)
The South American
Redtail Catfish
(Phractocephalus
hemioliopterus)
This is one of many large growing
readily available catfish. These catfish
can grow to five feet and require very
large aquariums. The grow extremely
quick and can live for a very long time.
The recommended holding tank for
something like this is at least a 2000
gallon stock tank. The circular shape of
a stock tank is perfect for this fish. If
you're not prepared to give one of these
fish the space it needs then please do
not purchase this fish!

The South American Redtail Catfish
(Phractocephalus hemioliopterus)



 The Common pleco
(Liposarcus pardalis)
The common pleco is sold as an algae
eater and most will do a fine job until they
reach about 6". At that point it seems as if
they give up on keeping your tank free of
algae and start going to the surface to eat
or waiting for prepared foods to hit the
bottom. They've got a big appetite and can
grow to over two feet! Common plecos are
becoming a problem in the southern
United states as most people who don't
know what to do with them release them
into their local bodies of water.
 The Common pleco (Liposarcus pardalis)


The Clown Knife
The Clown Knife fish (Chitala
(Notopterus) chitala) is another
common monster sold at even Walmart
(I'm rolling my eyes) These guys get up
to 30" if not bigger! They require huge
confines to live comfortably. They're a
graceful fish and don't let their small
looking mouth fool you. It opens very
wide to eat live prey.
The Clown Knife (Chitala (Notopterus) chitala)


Photo credit:
Clare and Karl Baxter

 Tiger Shovelnose Catfish
(Pseudoplatystoma
fasciatum)
often referred to is also another fast
growing South American catfish. As a pup
it's a very attractive fish but will grow to 20"
in it's first year of life! Like most of these
large predatory cats they require pristine  
water conditions which means you'll need
to be prepared to do lots of water changes,
not tomention one of those 2000 gallon
stock tanks to provide it with a home for its
30 years of life.
 Tiger Shovelnose Catfish
(Pseudoplatystoma fasciatum)


The Asian Redtailed
Catfish (Hemibagrus
wyckioides)
These guys are quite possibly the most
aggressive fresh water fish on the
planet. If kept with other fish that won't fit
in it's mouth it will simply tear chunks
off of them. They grow to approx. 30"
and pack quite a punch! Be careful
when putting your hands in the tank
with these brutes! They're not
recommended for the faint of heart!
The Asian Redtailed Catfish
(Hemibagrus wyckioides)


Bala Sharks
(Balantiocheilus
melanopterus)
Yet another common misplaced fish that's
sold in the pet trade as a great community
fish. These "sharks" grow to over a foot
and they enjoy the company of their own
kind. Which means in order to properly
house them they need lots of room. It
seems they prefer to be in numbers of
three or greater and they are fast
swimmers, so long tanks are required!


Bala Sharks
(Balantiocheilus melanopterus)



Photo credit:
Richard Brown

The Iridescent shark,
(Pangassius hypopthalmus)

The Iridescent shark is another readily
available tank buster fish that is sold to
unwary fish keepers. Make no mistake,
thease guys get big, 36" big! Not for
your average aquarist, yet they're sold
for under $5 at most stores. Some
claim they only grow to about 12"....
Take it from me they get much bigger!


The Iridescent shark,
(Pangassius hypopthalmus)



Photo credit:
Gage Merrell

The tinfoil barb
(Barbonymus
schwanenfeldii)
The tinfoil barb is a fast growing Asian
fish that is often sold for cheap prices at
pet shops simply because they take up
to much space. Often sold around the
2-8 inch mark, they can reach 12 inches
or more in length. Your going to need a
75 gallon tank to house these guys, not
to mention they prefer to live in groups.

Written by, Artemis

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improve the site for you!

Pictures and more info
will be added!

Thanks!
Peacock Bass (Cichla
ocellaris) (butterfly
peacock bass)
The peacock bass, or Tucanare is one
heck of a fish. Reaching three feet in
the wild, and able to swallow fish half it’
s size, this fish puts Godzilla to shame.
Often sold at pet shops, this fish it a big
hit in many due to it’s pretty colors.
There are many varieties to choose
from.

Written by, Artemis

Clown Loach (Chromobotia
macracanthus)
Sadly, the clown loach is sold at most
pet shops, and few realize the can grow
to 16’’ in length. Luckily, it this fish takes
ten years to grow to it’s full length,
growing a mere one inch a year after it
hits two inches.

Written by, Artemis
  Piranha
The piranha is often found in the hobby
because of it’s reputation of a
fearsome predator, the piranha is a lot
more subtle than many think. Never the
less, the piranha is very present in the
hobby. Able to reach sizes of up to 14
inches, not to mention preferring to live
in schools, few owners of this animal
can actually care for it properly. I would
recommend a tank of at least 100
gallon for a school of four to five
individuals.

Written by, Artemis

 
Giant Gouramy
(Osphronemus gouramy)
If you find yourself in possession with
one of these monsters, you better call
us, and quick! Although only growing up
to lengths of two feet, this air-breathing
fish is just as high-bodied! Please think
twice about buying these “cute” little fish
found at many pet shops.

Written by, Artemis

  Dorado
At first sight, the dorado looks like a
gold colored trout, hence the name
dorado. A member of the characins
family, the dorado can easily grow over
a foot and will eliminate other tank-
mates at ease. Not a good choice for
the average aquarist.

Written by, Artemis

 
Arapaima (Arapaima gigas)
The arapaima is the ultimate monster
fish. Easily the biggest fish on this list, a
fully grown arapaima could measure
over ten feet! Often sold at small pet
shops, your going to need a 10,000
gallon tank to keep ones of these happy!
Not only this, but this endangered fish
will happily gulp down anything under
three feet!

Written by, Artemis
  Lima Shovelnose(Sorubim Lima)
Also known as the duck-billed or
common shovelnose catfish, these fish
are not much different from they’re tiger
patterned counter-parts. Although much
smaller, generally growing from 16-20
inches, these interesting shovel-nosed
catfish have a big appetite in the home
aquarium. Please don’t buy this fish
unless you have an aquarium of at
least 125 gallons.

Written by, Artemis

 
SnakeHeads (There are
two genera, Channa in
Asia, and Parachanna in
Africa, consisting of 30
species.)
Here’s a fish that shames piranhas.
There are several varieties, but none are
as fearsome as the red snake head.
Often growing over three feet in length,
this fish has a bite powerful enough to
require stitches! Please think twice
before purchasing one of these fish.

Written by, Artemis

  Zebra Shovelnose(Merodontus
Tigrinus)

The zebra shovelnose is the tiger
shovelnose all over again. Often much
more expensive and harder to find, the
zebra shovelnose is just as swift and
predatory as the TSN. Luckily, this fish
reaches only two feet in length when
fully grown but still needs large
confines!

Written by, Artemis



 
Lungfish a group of fish
belonging to the families
Ceratodontidae and
Lepidosirenidae
Known for it’s ability to breathe air, the
lungfish is a popular pet. If you order one
from an online supplier, you will receive
a package of mud. Put the mud in water,
and a lungfish, very much alive will swim
out. Sadly, these fish are suitable for only
the dedicated hobbyist, growing three
feet long, and requiring aquariums of at
least two hundred gallons.

Written by, Artemis
  Ripsaw Catfish(pseododoras niger)
The ripsaw catfish is luckily one of the
less common monster fishes to find,
but never the less, they’re out there,
and they get BIG! At first sight, they look
like a giant corydoras catfish with
spines running down it’s back, and
actually, this is exactly what it is.

Written by, Artemis
       


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