what fishes eats crabs or anything can kill crabs

[chercm]

pls help

any fishes eats crabs ?

[hongqixian]

something that would kill crabs would generally not be reef-safe. Maybe triggers and larger parrot fish? but I don't think they would be that effective in catching out the crabs from the crevices esp since crabs tend to be more active at night. Use the brands essence container crab trap idea maybe?

oh, someone else suggested using an octopus before.

[xersion]

using of traps or octopus is the best way ba.. however octopus is very troublesome.. sometime will crawl out of the tank too

[Achilles Tang]

Porcupine boxfishes are known to blow crabs, mantis shrimps out of holes to eat them.

Small octopuses are good too. However, getting these out would be the next problem.

[chercm]

very hard to find them ?

[hongqixian]

if you want octopuses, reborn had some brown ones last week, about the size of a small fish. but octopuses eat other crustaceans like shrimp too.

[Caleb]

Hmmm... i would liken getting octopii to get rid of the crabs... like releasing a tiger on a hill to get rid of the foxes...

You may get rid of the foxes.. but wat happens when the tiger gets hungry after all the foxes have gone?

This is a complex problem.. many solutions but I think the end in mind is more important here, as an addition of a strong/oppressive/territorial creature can change the equalibrium of peace in a tank..

my 2cents worth!