Freshwater
Pet
Aquarium
Crabs
Aquarium Crabs
for
Sale
Click
here
to
buy
Aquarium
Crabs.
These are Red Claw Crabs for sale in a large aquarium at our online retail tropical fish store. We also have Gold Fiddler Crabs for sale. Both of these Crabs do well in fresh water. Click here for more about buying Crabs from us.
Click on the images above.
Comments
The
Red
Claw
Crabs
are
very
attractive
with
black
or very
dark
maroon
bodies
and
red
claws.
These
Red
Claw
Crabs
and
the
Gold
Fiddler
Crabs
are
truly
aquatic
and
do not
need
to get
out
of the
water.
They
can
live
indefinitely
on the
bottom
of your
aquarium
completely
under
water.
in your web sites you says that red claw crabs do not not to come out from water as well as the fiddler crabs. well this is not a correct information, Both Species need to come out of water from time to time. red claw crabs are fresh water where as fiddler crab are brakish water crabs.
thanks for reading
farhan : )
Naturalist/Aquarist
Reply.
Hello
Farhan.
Thank
you
for
your
comments.
You
may
be right,
but
both
of the
types
of Crabs,
that
we sell,
do well
for
us in
freshwater.
We keep
these
Crabs
in big
aquariums
with
very
shallow
water,
but
I have
kept
Crabs
in smaller
aquariums,
where
they
could
not
get
out
of the
water,
and
they
did
fine
for
a long
time.
Other
aquarists
have
told
me that
their
Crabs
have
done
well
in aquariums
similar
to mine.
But
it would
be best
to give
the
Crabs
a choice
by placing
a big
rock
or pile
of rocks
that
extend
up out
of the
water
and
allow
the
Crabs
to climb
up and
out
of the
water.
The
rocks
must
be arranged
carefully
in such
a way
that
will
not
allow
the
Crabs
to get
out
of the
aquarium.
It would
be interesting
to carefully
observe
the
Crabs
to see
if they
enjoy
getting
out
of the
water
and
to see
how
much
time
they
spend
out
of the
water.
It would
also
be interesting
to arrange
a light
above
one
side
of the
rock
to see
if the
Crabs
enjoy
basking
in the
light,
or if
they
stay
on the
side
of the
rock
away
from
the
light.
I would
like
to try
this
with
both
a small
incandescent
light
bulb
and
perhaps
a special
wide
spectrum
light
bulb,
like
the
bulbs
recommended
for
reptiles.
Thanks
again
for
your
comments.
Common Name
Scientific Name
Red Claw Crabs
Sesarma bidens
Gold Fiddler Crabs
Uca (species)
Common Name
Scientific Name
These
Crabs
will
escape
from
your
aquarium
unless
you
make
sure
there
is nothing
near
the
vertical
pieces
of glass
for
at least
4" above
the
bottom
of your
aquarium.
So move
the
rocks,
ornaments,
and
all
the
other
objects
away
from
the
glass.
Shorten
the
length
of the
siphon
tube
to the
filter,
so the
strainer
is 4"
above
the
gravel.
Make
sure
there
are
no pieces
of airline
tubing
the
Crabs
can
use
to crawl
out.
Here
is an
interesting
email
comment
sent
to us
by David,
after
he visited
this
web
page.
I came across many posts on various boards asking for help in controlling snails, and cleaner tanks etc. I think I found a very good solution. Crabs and crayfish: Crabs eat the snails! I had about 12 of the little snails that usually come on live plants and I noticed the Crabs eating them so they are keeping them under control in my tank. Like you already have on your Crab info they help keep the tank clean.
Also though they help aerate the substrate a little. I use sand and they are very good for it; they sift through the very top layer about 1/4 inch all day long looking for food which helps keep the sand loose etc. The crayfish does the same but it goes in a bit deeper maybe 1/2 - 3/4 inch down sometimes. So It seems there are a few extra reasons to have them in a tank
1.
Scavenge bottom of tank - helps keep it clean
2.
Keeps snails under control
3.
Helps aerate, loosen substrate which helps the biological process better - especially sand
4.
They appear to "groom" live plants of unwanted junk also without harming the actual plants
5.
They are fun to watch.
David
Reply.
Thank
you,
David,
for
your
comments
about
your
Crabs.
If you
see
something
interesting
and
useful
while
watching
your
fish
or other
animals,
send
us your
comments
and
we may
include
them
in this
web
site.
Like
we did
with
David's
interesting
comments
about
his
Crabs.
Incidentally,
we do
not
recommend
using
sand
in aquariums
or fish
bowls,
because
the
water
does
not
circulate
well
through
the
sand,
and
it soon
becomes
polluted.
You
can
substitute
a thin
layer
of aquarium
gravel
that
is at
most
1/4"
thick.
Click
here
for
more
about
aquarium
gravel.
This picture shows a Male Gold Fiddler Crab. You can tell he is a male by his large right claw at the top of the picture. Females do not have oversized claws. To some people with lots of imagination these large claws look like fiddles, so these Crabs are called Fiddler Crabs. Males often climb on top of something like a rock and wave their large claw.
Gold
Fiddler
Crabs
are
very
attractive
and
interesting
to watch.
The
male
Gold
Fiddler
Crabs
have
one
large
claw
and
one
smaller
claw.
The
females
have
two
smaller
claws.
The
males
often
climb
on top
of a
rock,
hold
their
big
claw
up,
and
wave
it back
and
forth.
Why?
We don't
know,
but
we'd
like
to know.
Click
here
for
the
answer.
Appropriate
Home
An aquarium
with
an
external
power
filter
with
a BIO-Wheel
and
a maximum
of 1/4
inch
of
gravel.
These
Crabs
can
live
in an
aquarium
with
or without
an aquarium
heater
at a
temperature
of about
65 to
82 degrees
F. Many
of these
Crabs
prefer
water
from
75 to
82 degrees
F. Be
sure
the
Crabs
can't
escape,
or they
will
escape.
Recommended
Diet
Crabs
will
eat
almost
anything
such
as particles
of flake
food
that
sink
to the
bottom
of the
aquarium
and
other
bits
of food.
For
this
reason
they
are
excellent
scavengers
and
help
improve
the
water
quality
by reducing
the
amount
of uneaten
food
in the
aquarium.
They
also
stir
the
top
1/4"
of gravel
and
help
keep
it clean.
But
they
are
not
a substitute
for
cleaning
your
aquarium
and
changing
some
of the
water.
Click
here
for
more
about
cleaning
aquariums.
Crabs
will
eagerly
eat
live
and
frozen
food
such
as blood
worms
and
brine
shrimp.
We give
all
of our
Crabs
an occasional
treat
of live
food
such
as live
Black
Worms.
Click
here
for
more
about
Black
Worms.
The advertisement, shown below, links to
this advertiser's web site.
Feed Your Crabs
...
The
Proper Foods !!
Click
here to go the
page in Hikari's web site with more information
about the proper food for your Pet Crabs.
Compatibility
These
Crabs
will
quarrel
among
themselves,
so be
sure
each
one
has
plenty
of room
and
don't
crowd
too
many
in the
same
aquarium.
One
Crab
per
square
foot
of bottom
area
is enough.
So,
for
example,
a standard
10 gallon
aquarium
would
have
about
2 Crabs.
A larger
40 gallon
aquarium
has
about
four
square
feet
of bottom
area,
which
is room
for
about
4 Crabs.
We received
an email
that
said
when
they
looked
at the
picture
at the
top
of this
page,
they
saw
that
we were
in obvious
violation
of our
own
advice
about
how
much
space
each
Crab
needs.
They're
right.
You
should
give
each
Crab
about
one
square
foot
(12"
x 12")
of bottom
area,
or crowd
them
together
like
we did
in the
photo
above,
which
seems
to neutralize
their
territoriality
and
aggressiveness.
This
is also
true
of many
fish.
Give
them
plenty
of space
or crowd
them
to reduce
fighting.
Since
most
of the
people
reading
this
page
are
aquarium
hobbyists
and
will
keep
just
a few
Crabs,
it's
best
if each
Crab
has
at least
one
square
foot
of bottom
area.
We are
dealers
and
keep
hundreds
of Crabs.
These
Crabs
do fine
the
way
we keep
them
as shown
in the
picture
at the
top
of this
page.
Compatible
Tank
Mates
These
small
Crabs
seem
to be
too
slow
to catch
most
fish.
The
Crabs
wave
their
claws
at fish
but
don't
ever
seem
to catch
a fish,
unless
the
fish
is sick
and
crashed
on the
bottom.
The
Crabs
don't
seem
to bother
Plecostomus
Catfish.
The
Plecos.
just
swim
away
and
hang
on the
side
of the
aquarium
above
the
Crabs.
The
Crabs
will
bother
and
sometimes
eat
African
Dwarf
Frogs
and
Ghost
Shrimp.
Some
types
of Puffer
Fish
will
attack
and
eat
Crabs.
Click
here
to read
more
about
several
other
groups
of compatible
fish.
Size
and
Lifespan
These
Crabs
can
live
for
a few
years
and
grow
to be
about
2.5"
across
the
shell.
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here
to to
on to
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web
site
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Customer
Comments
and
our
Replies
about
Freshwater
Crabs.
Books about
Shrimps, Crayfish, and Crabs The books shown below are listed on Amazon.com. You can click on the title or on the image of a book to go to the page at
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Click
here for a complete list of
books about Shrimps, Crabs, and Crayfish at Amazon.com.
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on to
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in this
web
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Comments
and
our
Replies
about
Freshwater
Crabs.
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We buy the highest quality fish, produced by the best fish
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