Setting a Crab Trap

[stinger]

scanman, I use your idea since yesterday and I have captured 5 crabs already! There's a sixth one just hanging outside the bottle as it cannot find any grip in the bottle before letting go.

Thanks for the idea man!

[euphoria]

great! ...how do you guys solve the problem of shrimps stealing the market prawn?

[stinger]

great! ...how do you guys solve the problem of shrimps stealing the market prawn?

Postion the bottle so that there is not enough space for the shrimp to go in excwpt for the crab.

[euphoria]

Postion the bottle so that there is not enough space for the shrimp to go in excwpt for the crab.

huh? very diificult le...

[blacknails]

Wow.. that's like a super great idea, man!!

Top quality live rocks usually come with these pests and unless the stress during cycling is so bad it kills them, they'll live on and screw up the tank a little..

I think the brands bottle method can only work properly if the tank has little or no inhabitants yet.. or else the other animals would probably steal the piece of meat first..

You know, I think this new concept can actually be made into a product!! Market it to the LFS and advertise it in Singapore by posters and paper ads.. We could make some money!!

If anyone of you here wanna do it.. Do remember me.. hehehe

[stinger]

huh? very diificult le...

This is how I position the bottle.

Another way is to make the opening smaller so that only crabs can go in.

Btw, I caught the 6th crab just now!

[Lionhead]

Hi,

I'm new in this hobby and thinking of setting up a tank in maybe 2yrs time, currently still gathering information. After reading this thread, I found out that the shrimps and the crabs are pest for the tank. Is there any others way then trapping them? Is it when your tank mature those pest will started to grow in the tank?

Regarding the trapping of crabs is another thing that I have learn in this forum. Thanks Bros.

I have think of a way how to trap those shrimps but dont know will it works or not. First, you get a empty glass bottle without the cap and wash it clean. Then get a fishing net which is half the length of the size of the bottle, cut it out and at the center of the net cut out a small hole. Push the net (small hole) into the bottle with a pen until the big end of the net near the mouth of the bottle then secure it with cable tie. That's it but I dont know if this going to work but maybe you guys can go and try it out.

[scanman]

cool man ..... must say it is quite fun ....but now no more crab to catch ...kind of miss the fun

[[d]3v|L]

Caught 4 crabs in the bottle! hunting for more

[scanman]

wow...beat my record of 3 in one

[tansh]

Indeed good catch,must try on my tank,btw i think i hv 3-4 crabs in my 2.5ft tank

[[d]3v|L]

1 problem, how to stop my fire shrimp from stealing the food out??

[blacknails]

Oh dear oh dear.. My bristle worms also always seek n destroy the food before the crab leh.. how?

[jc85]

my coral banded shrimp had once again stolen my bait. damn....

[stinger]

So far I have managed to catch 10 crabs (2L, 5M, 3S) . Saw the bristle worm going in halfway and backing out. So far no luck catching it. Am also trying to catch the pistol shrimp as I suspect it could be causing the deaths of the blood and cleaner shrimp.

[hoppinghippos]

what kind of bait do you guys use?

[jc85]

I use a small piece of market prawn. apparently, my boxing shrimp love them and get hold of it b4 the crabs.

[stinger]

I just use the pellets that I am presently feeding my fishes, that's all, but I think market prawn is better.

[[d]3v|L]

I tried dipping the prawns in garlic juice.. all crabs come out very fast cos they maybe smell the scent.. faster effect and faster kill

[blueheaven]

do you guys leave the trap overnight? wun there be a nitrite increase?

[jOO]

great to hear that such a simple contraction is so greatly successful.. wonder if it has been succesful in nailing mantis shrimps... i think i haf quite a number of those in my tank... clicking away all the time...