)
male
male
weight:50g
Food: fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
almost all the time living in the sea
have a pair of swimming legs
high ability to hide under the sand
)
)
Female
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
have different colour pattern when small
become grey colour when bigger
claw colour is purple
)
)
the pictures show its in different pattern cover and the claw colour is purple
high ability to hide in sand or under rock
hard body
high ability to suffer from bad environment
Cover
Its cover is thick, you can only find it is just a cover by its eye colour is white and transparent
Longest petting time: 6 months
6 cm sample is found in wild
it right claw is bigger than the left claw
6 cm sample is found in wild
it left claw is bigger than the right claw
7 cm sample is found in wild
)
Male (the claw much bigger and the horn on both side raised a little bit)
)
size: 4 cm
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
have different colour pattern when small
it bottom colour is brown
)
the cover edge in the front and the top of the claw have some blue colour
)
the lower part of the claw is short than the top
compare with the upper species
higher defense power
need more oxygen
have a bigger horn on the cover even it is small
)
claws is thicker
)
eye distance closer
)
egg is brown
high possible is the relative of above two crabs
)
Male
5 cm
Food: fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
the horn on both side raised
high attack ability increase, two eyes distance shorter before
claw span increase, can make bigger damage to the prey
size can be 25 cm
)
Female
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
high ability to climb
single colour pattern
male have a translucence circle substance on its claws
another female sample was found in wild
its colour become deeper because it soon to change it
cover
Reborn
)
Her right claw is reborn inside her right hand position and can be used after
its change the cover
Cover
)
Male
Longest petting time: 6 months
Another type of shore crab
)
male
weight: 2g
¡@
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
low aggressive (easy to be hurt)
high ability to rebuild
Hand
)
male have hair on its claws when they grow up
Longest petting time: 6 months
)
)
baby
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
egg colour is black
bady crab colour is deep and like the environment
single colour pattern
like to hide
Cover
)
Male
Longest petting time: 6 months
)
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
have different colour pattern
like to hide
Cover
)
This small crab cover have more pattern than the bigger one
Longest petting time: 6 months
)
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
have different colour pattern
like to hide
A middle size
sample found in wild
)
)
Female
carry black eggs
compare male and female cover
)
male have bigger claw with hair and female have smaller
claw with many pots
)
male claw hair both appear outside and inside
)
female pots mainly on the outside of the claw
Longest petting time: 6 months
)
)
(1 cm )
female
)
)
(0.5 cm )
female
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
female with hair on its claw
the 1 cm sample have more hair at the back than the 0.5 sample
)
)
male
when it out of the water
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
hair all around its body to avoid predator
powerful leg and claw
hard body
back also is brown colour and claws are purple
)
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
single colour pattern
high ability to hide in sand
small size (general below 1 inch)
eat when tidal go down
Find a similar one in wild
The video show it hide in the hole quickly
Longest petting time: 2 months
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
single colour pattern
high ability to hide in sand and walk on rock
eat under and out of water
a 3 cm sample is found in wild
its colour become deeper because the hair surround its
body increase and contain more grey sand
its claws colour is white and it can with or without its
claws
its frighten the enemy by firstly putting its body down
and showing its whole claws then putting its body up and hanging up its claws
(the motion will repeat and repeat when it feel unsafe )
cover (male)
)
)
)
Male
5 cm
¡@
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
high ability to hide in sand and swimming in water
big size (can be 6-9 inches)
its claws have a little red colour since it is 1 cm
growing
| 1 cm | body and claw colour is green and legs are very light green |
| 5 cm | body colour become light green |
| 10 cm | body colour become deep grey |
cover
)
4 cm cover (female)
)
)
the bottom of its body and claws colour is white
)
)
left claw inside
left claw outside
)
)
right claw inside
right claw outside
right claw have raise teeth to cut hard object
the inside of the claws have red colour on the claw and the biggest sting on the
arm
)
swimming leg have hair to help swimming
A middle size sample found in wild
Male
)
)
female
7.5 cm the claw is orange and brown colour
Longest petting time: 2 months
)
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
living in the deep water rocks area
high ability to hide in sand and swimming in water
back spread of brown hair, like a rock covered by alga
)
claw is blue colour with hair
)
the picture show its bottom and claw bottom also have hair and the hair is
spread under a special pattern
)
the picture show it back tooth on the cover is not sharp, and may be a child
)
male
length: 2 cm
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
thin body
body like a piece of shell
white colour
a pair of big flat claw
the video show it using claw to help its walking
the video show it from backside down back to backside up
)
the picture show its stretch in all its legs and claws
when it feel danger (the legs is totally hidden)
the video show its bottom cover is much smaller than
its back cover
the video show its eyes are very small and above it
mouth
Food: Fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
moving slowly
)
)
female
male
characteristic
timidity
if only one leg is hurt, it can directly grow up a new one without changing its cover
generally, two claws have different size
Egg
In pink colour
lay eggs
)
Male will protect female before lay eggs by holding the female shell
)
length: 0.5 cm
unsuccessful study: hermit crab become bigger but do not have suitable shell
to change, trap in the shell at last
)
length: 0.5 cm
Use new method, to avoid trapped in the shell, take out the shell before take it into water
)
)
First time change cover
after taking out its shell, when it go to rest or
prevent danger, it will put it soft body into sand
)
)
Second time change cover
)
length: 1 cm
become a little bit bigger
)
Third time change cover
)
length: 1.5 cm
become a little bit bigger
)
Fourth time change cover
(the cover just remain the main body part that mean its changed the cover a
few days before)
)
length: 1.5 cm
become a little bit bigger
)
Fifth time change cover
)
Sixth time change cover
)
length: 1.7 cm
a little bit bigger
Longest petting time: 1 months
Another type of hermit crab
)
)
Cover
weight:11g (including shell weight around 9g)
Food: dry food (recommend), dry shrimp, fish
Basic criteria: full tank of saltwater, bio rings
Recommend: air-pump with sponge filter, heater
characteristic
can grasp things 10 times of its weight
some is timidity (always hide in the shell when something moving)
some is boldness (catch your hand)
high ability to suffer from bad environment
size can be big
the video show a big sample found in wild, its size grow over 15 cm long
)
length: 3 cm
)
1 st change its cover
)
increase to 4 cm
1-2 day before the 2nd change its cover
reason: the hermit crab need more oxygen before its change the cover
Longest petting time: 1 year
High possibility is the egg of one of the hermit crabs about
Reason:
1. sudden found 100 of sample, but drop very quick
2. separate samples do not have quick breeding ability
3. similar to general hermit crab baby
Food: Dry shrimp or dry food
Basic criteria: full tank of saltwater, bio rings and air pump
Recommend: air-pump with sponge filter, heater
Characteristic
floating in the water or moving on the tank surface
High vitality
it still alive even its body is trapped by other substance
Day 2
)
)
take photo from its top and side, and the photos show its body colour is light red
start petting time: 2006/6/7
Land hermit crab
)
size: 3 cm
Food: dry food (recommend), dry shrimp, bread
Basic criteria: full tank of saltwater with land
Recommend: air-pump with sponge filter
Characteristic
need to change its cover in the saltwater
horseshoe crab
)
size: 3 mm
back of body
the area seem to be the muscle
Saltwater crab breeding
For the best breeding, separate all the crab or group by type
Crab eating habit
Generally, crab need to eat 10-20% of its body weight and like to eat strong smell and entire food
It will not eat if the environment is unsuitable (gravity or clean level).
Even the environment is good
It is unsure
crab need to eat food every day.
Sometime is because crab stored the food in the body or prepare to change the
cover.
Crab change cover
Normally, crab change cover around 5 minutes otherwise may lead to death. But the total process need three days to complete.
Firstly is to change cover by leaving from the old
cover.
Then the new cover is very soft just like soft sweets and it need
around 1 day become harder,
In day two, it will search for food to recover the energy and growth.
In day three, you will find it become bigger obviously.
Summary
Saltwater crab is very hard to pet and breed. The most important thing is to make sure the water is in certain gravity and without harmful substance. Because they need to change the cover from time to time. And every time they change it, if the condition change, they may die. Also, they must breed in certain condition, e.g. most of it may follow the tidal. So it may not easy to let it breed.
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