IOM: Pistol shrimp

celacanthr

Active Member
*ok first off im doing another already cause its a new month. If that doesn't fly then... Fishmamma made me do it!
"Did my glass tank just break!?"
This is the usual diologue that is associated with the loud !POP! that is made by those lovable little shrimp.
Anatomy

Well, I'll begin by telling ya'll about these little guys' family.
Kingdom- Animalia
Phylum- Arthropoda
Superclass- Crustacea
Class- Malacostraca
Superorder- Eucarida
Order- Decapoda
Suborder- Pleocyamata

Superfamily- Alpheoidea

Family- Alpheidae

Genus- Alpheus

Species- there are 3 main species in the aquarium trade-bellulus
/soror
/bisincisus

* as with most classificatons of inverts this may not be the same depending on who you ask, so we will let this stand unless of course you have a masters degree on up and you see a major problem with it.
Ok, with that doosy of a classification i will move on to the more interesting parts, the symbiosis and the snapping!
Bam- The Snapping
Ok well first off contrary to popular belief it is not actuallythe claws snapping but what occurs because of it. When an Alpheus snaps their claws the tissue in between the claws will actually create a vacuum like bubble. This bubble will implode, creating a very loud BAM, and a bit of light, which is not visible to the

[hr]
eye and is believed has no importance to the shrimp, just a by product.
Symbiosis
Well, this is a wonderful example of symbiosis where both parties benefit. The job of the shrimp is to basically to dig a hole and sometimes to bring food to the goby. The gobies job is to keep a watch out since they, compared to the shrimp, have superb eyesight. Whenever the shrimp leaves the tunnel he will rarely stray far for he needs his antennae to be touching the goby at all times so that when the goby begins to retreat from a threat the shrimp will be informed by way of the antenae and quickly retreat into the hole.
Care
  • No copper ever ever ever!
  • No, Ammonia please.
  • No, nitrites please
    No, triggers, eels, puffers, or other invert eaters.
    Salinity= 1.023 < and > 1.027
    Make sure your nitrates are lower than 30 please
Now when you feed your other inverts like brittle star, stars, or any other spot feeders just take whatever you feed em and put it near the shrimps hole. I would not worry however if the shrimp doesnt eat this it probably ate somethin else.
Problems

Molting- If you have other crustacea in your tank then hopefully you have gone through this. For everyone else molting is where the shrimp exits its exoskeleton. this is how crustacea grow. Now after they molt the will be very shy for a while cause after they molt they have to form another exoskeleton, so at that moment they are about the consistency of peeled shrimp, very easy to eat, that is why they hide. For the Love of God please do not go moving around the rock looking for it. It will come out when its ready. Sometimes problems arise when they molt such as losing limbs or becoming deformed. this can usually. When a deformity happens often times it is fatal, because the internal organs were probably deformed also, which is not good. If they lose a limb just calm down they probably won't die, and next time they molt , provided that the conditions are right they will grow back their limbs!

Annoying- ok technically this is not a problem for the shrimp, but it is a major problem for the fish that they try and room with. these fish I speak of are burrowing fish such as Jawfish which do not naturally partner with these shrimp. The shrimp will decide that this is a goby friend that wants to be its partner. This will cause both the non-symbiotic fish and shrimp to become very stressed which is why I recommend alwys introducing the shrimp and goby at the same time.
 

celacanthr

Active Member
The Partners
  • Yellow Watchmen Goby - Cryptocentrus cinctus
  • Pink Spotted Watchmen Goby - Cryptocentrus leptocephalus
  • Hi Fin Red Banded Goby - Stonogobiops nematodes
  • Orang Spotted Goby - Amblyeleotris guttata
  • Steinitz Goby - Amblyeleotris steinitzi
  • Orange Stripe Prawn Goby-Amblyeleotris steinitzi
    Blue Spotted Watchman Goby - Cryptocentrus pavoninoides
    Wheelers Watchman Goby - Amblyeleotris wheeleri
    Pinkbar Goby - Cryptocentrus aurora
    Luther's Watchman Goby - Cryptocentrus lutheri
    Diagonal Bar Prawn Goby - Amblyeleotris diagonalis
    Tangaroa Goby - Ctenogobiops tangaroai
* If you notice the genera you will see the biggest groups are Cryptocentrus and Amblyeleotris
* And I hate grammar so to let ya'll know all mistakes were intintional and not a mistake so no need to point em out.
:hilarious
 

fishmamma

Active Member
WOO-HOO!! How did you whip that up so fast? Have you secretly been staying up all night to write this IOMs?

Now I often worry about the iodine thing being a Mom to 2 pistol shrimp. I inquired at LFS and they said that my regular water changes should be enough for the little buggers, no need to to dose iodine seperatly. But now after reading your lovely piece a thought occured to me.....once "Big Dig" seemed all out of sorts and had lost a claw. Not sure if it was from a recent molt or injury but this does make me question my iodine levels once again. :thinking: It regenerated but does anybody have any thoughts or comments here? What should the iodine levels be for the pistols to molt properly?
 

celacanthr

Active Member
I would suggest testing the iodine. According to salifert .06 mg/L and that if you get a test for it make sure it measures iodate also.

Oh, I am tired I was up all night resear... i mean watching t.v.!
:hilarious :hilarious :hilarious
 

promisetbg

Active Member
Great Job!
As well the Yashia White Ray Goby {stonogobiops spp.} will also pair with pistols.We have one with a red/white/yellow stripe pistol at work.They are too cool together.
 

fishmamma

Active Member
I just brought home a Yasha goby and he was paired with a pistol at LFS. Brought the pistol home last week while waiting for a new lid. The goby is annoyed by the pistol for the moment but hopefully that will change. If not that is OK too. I have read the Yasha prefers the Randalli for pairing. May I ask how frequently your Yasha shows himself? It seems as though they are quite shy as a species in general and can go without being seen for weeks at a time.
 

promisetbg

Active Member
The yashas are very shy,and the most extremely jumpy fish I have seen.It took a few days for them to pair and get a burrow going.It's been since last monday,and now the Yasha comes to the front of the hole.
 

speg

Active Member
I would like to throw some personal experience in here... if you dont mind.
I recieved what I >thought< to be a single pistol shrimp when I first purchased my live rock. To make a long story short there were 3 pistol shrimp in the tank! If you have two pistol shrimp they end up having a similar relationship as a goby+pistol shrimp. One ends up looking for food and the other keeps watch.
I have also recently learned that there may be several minature pistol shrimp living around my rock. I think that this is a different species that only grow to be very small. Around a half an inch in length only.
There are rumors that pistol shrimp will attack/kill cleaner shrimp. I cannot confirm or deny that this is true.. I know that i've had HORRIBLE luck with cleaner shrimp... but I believe its due to my salinity changing too quickly. I "believe" in my opinion that this is a false statement for the most part... there are many types of pistol shrimp and there may be a couple species that dislike other shrimp.
Also if you're in the market for a pistol shrimp make sure that you understand they're very effective sand stirrers They will face backwards and kick their feet, tossing sand all over. I would recommend anyone with very fine sand not purchasing a pistol shrimp because your tank will constantly be cloudy. You may also find yourself constantly sweeping your corals clean of sand... this becomes very annoying.
I have also witnessed my pistol shrimp showing mild aggressive behavior towards anything that happens to stray into its lair. I have had hermits waltz into the pistol shrimps cave and it'll come running at the hermit with a loud POP!. The hermit does not get damaged and the pistol does not seem to try in any way to kill the hermit... but it does certainly make a point of letting the hermit know to be on its way... quickly.
Hope thats useful.
 
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