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I can confirm that hermit crabs favor salinity on the lower end of the reef tank spectrum vs. higher. I have been trying to ease my salinity down from 35 ppt to 30 ppt. The closer I get, the more active the crabs have become. I have about a dozen and they have ALL started to become more active. Take it FWIW.
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∙ 11y ago
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What is the salinity in the water that the crab live?
The salinity affects the crabs by altering the size of their internal organs, causing them to swell and decrease, as the salinity does. This drastic change in the crabs can cause death, and colour changes within the crab.
What nonliving things can affect a blue crab?
Water temperatute, pollution...
What is the movement of crab called?
Sidle
Do crabs need sand to live?
There are different rumours about this, however, crabs are said to be omeosmotic euryhaline (can tolerate wide ranges of salinity by maintaining constant the body fluids concentration), but quite different waters will surely shock and kill them. This really depends on the crab species in question, and also what you mean by ocean water. First, if you mean full strength sea water, most crabs can tolerate less saline water, and even adjust to changes in salinity. But as a rule of thumb, you need to consider the natural habitat from which the crab originated. If it came out of the ocean, it should stay in full strength sea water. If it came out of an estuary, it can tolerate less salt, and probably changes in salinity also, particularly if the estuary experiences periodic changes in tidal height. But extreme changes in salinity, especially if they are sudden, are likely to shock and kill a crab, as the previous commenter noted.
What kind of crab food do you give your blue crab?
crabs are scavengers and will eat anything. i feed mine fish flakes cause its easy and well balanced nutrition. feeding meat or veggies is messy and unhealthy. BLUE CRAB CARE The most difficult part of creating an aquatic environment for crabs is finding an appropriate salinity level. Although crabs are very hardy creatures, they are unable to survive in water of a drastically new salinity level. Partial water changes starting from 12 parts per thousand (ppt) allow the crabs to acclimatize to the salinity of our tank. Ideal tank conditions are shown below. Salinity level between 8 and 15 (ppt) Water temperature near 19˚C (66˚F) PH between 6 and 8 picture of blue crab: http://saltaquarium.about.com/library/photos/blpicinvertrlovdahlbluecrab.htm info: http://209.85.173.132/search?q=cache:LiRYzfEOHtkJ:classic.sidwell.edu/us/science/21bio/new/Crab_Poster_2005/Crab_Care.htm+blue+crab+care&hl=en&gl=us&strip=0 http://classic.sidwell.edu/us/science/21bio/new/Crab_Poster_2005/Crab_Care.htm
What is the difference between a salt water crab and a fresh water crab?
The fresh water crab lives in fresh water, water without salt. Salt water crab has gills that process the salt away. And those stay in salt water places like hmm oceans
Does crab roe affect the taste of she crab soup?
Well , it depends . If the crab is big in size it wiling less tasty. If the crab is small , it will be more tasty than the bigger crab
Does a crab use a foot for movement?
Yes because they are epic
What is a robot crab?
it is a little crab robot with water inside of it
Can you name 3 animals that have a shell and live in water?
crab, hermit crab, and lobsterHermit crab is a kind of crab, and it doesn't actually has its own shell. Oysters have shell and lives in water.
How long can crab live without food?
Depending on its size, a crab can go up to two weeks without food. Crabs eat very little and it store water in the back of its shell to moisture its gills.
How does a Japanese spider crab move?
what is a japanese spider crabs movement
