yes,but only for protection of his eggs
you kill the fiddler crab
No are you trying to kill it
No they do not kill each other becaues they love each other
More likely the opposite, the crab will eat/kill your dragon fish. Plus fiddler crabs do not often reproduce in captivity.
yes it does kill fiddler crabs so be careful that might be saying ouch get me out of here but we can never know
I think you mean hermet crabs. yes, a hermit crab female can kill a male if threatened. that is to say if you have crabs weak or strong enough to kill or be killed by one another.
yes
You cant the male would kill the female unless you have already a female then the female would kill the male
You can kill a crab apple tree by cutting it down with an axe.
No, they aren't. There are still about 97 species of fiddler crabs.
you cant they will kill you
Any dead creature in the water will putrefy and the resultant putrefaction will kill any fish in that water. So yes the dead crab will kill the Betta eventually.