They foam because they have trouble breathing! I know, sad, huh? Try putting it in water.
It is not unheard of for a crab to produce foaming. Most experts think that crabs do this on occasion to aerate their gills (crabs have gills) to keep them moist. This causes foam which you can clearly see. Another explanation also has to do with aeration, i.e. the crab could be producing bubbles not just to aerate its gills but also because oxygen levels in the water have become too low. Blowing bubbles in the water keeps helping oxygen levels up. Keep in mind, therefore, that you need to clean the tank completely at least once a week (removing everything, cleaning the tank thoroughly with hot water - do not use any soaps or chemical products which could be harmful to your crustacean) so that the water in the tank gets refreshed at least once a week.
http://www.Google.com/search?hl=en&safe=off&q=crabs+blowing+bubbles&btnG=Search
because they are going to die and they run out of breath
crabs do that to produce oxygen from water within their shell.
When a crab starts suffocating, or losing oxygen then start to foam to get oxygen. Without foaming it could die.
Because it is breathing air and I think because it's sick,I hope this works.
chicken soup freak
they blow bubbles because some of them do that just because
i think it is to keep them cooler if they are in warm places, i also read that if they are afraid they will blow bubbles, i kind of doubt that though, it would make more sense that they are in a dried area with limited water and they make bubbles by the water to be out of the water and still moist.
The scientific name for the fiddler crab is "Uca Pugnax".
A Boy Fiddler Crab has 1 big claw and 1 small. A Girl Fiddler Crab has 2 small claws.
they bolong in the crab group like fiddler crab group
yes,but only for protection of his eggs
You can tell a fiddler crab's gender by its claws. A female fiddler crab has two claws, the same size. A male fiddler crab has one large claw and one small claw.
Fiddler Crab
habitate for fiddler crab
yes
crab
No