Copepods

Another Newbie Question: Are copepods the tiny white barnacle looking
things that coat the rocks, etc? (That's what the guy that I bought the
tank from told me.)

Then I'm looking at this:

http://www.reed-mariculture.com/copepod/

And, they appear to be a free floating insect like creatures.

Reason I ask is that my Mandarin Dragonnet isn't looking very good. (It
was also beaten up by a damsil). As far as I can tell, all the white
crustations on the rocks (which it was eating) are gone.

--Kurt

KurtG wrote:

Another Newbie Question: Are copepods the tiny white barnacle looking
things that coat the rocks, etc? (That's what the guy that I bought the
tank from told me.)

They could be, if they move.

Then I'm looking at this:

http://www.reed-mariculture.com/copepod/

And, they appear to be a free floating insect like creatures.

They walk on the rocks.

Reason I ask is that my Mandarin Dragonnet isn't looking very good. (It
was also beaten up by a damsil). As far as I can tell, all the white
crustations on the rocks (which it was eating) are gone.

You need a refugium to keep them supplied.

Mike

wrote:
They could be, if they move.

Definitely not then. These are calcified to the rocks.

Hm, I wonder what other mis-information I accepted without questioning.
No wonder he wanted to sell his tank. I know he added a trigger to a
reef tank and ended up with limited live stock.

btw, I was able to get the mandarin to eat frozen brine shrimp. Poor
thing must be starved. It should hold him for a few days until the
copepods show up.

--Kurt

KurtG wrote:

btw, I was able to get the mandarin to eat frozen brine shrimp. Poor
thing must be starved. It should hold him for a few days until the
copepods show up.

I ordered some from
http://www.inverts.com/Merchant2/mer...Store_Code=CRA

$17.50 for a 4 oz. bottle, plus $15.00 shipping.

My situation is a bit different. I thought I had enough pods established, so I
ordered a Mandarin. My wife works near the store, so I sent her down to pick it
up when it came in. The store owner was on the phone, the kid bagging fish put
two in the bag, and Elisabeth didn't know any better. So I ordered some pods and
hope they'll co-exist ok. So far, one stays on the left end of the tank, and the
other one tends to roam. There are brief fireworks when he/she roams over to the
left end (which is to be expected). Neither one seems to be losing or gaining
weight.

George Patterson
Forgive your enemies. But always remember who they are.

HI George: Mybe you got lucky and got a male and a female. I have both the
male has a spike on his dorsal fin and the female doesn't She also has
lighter coloration on her head. They ge along great. Bill
"George Patterson" wrote in message
news:XSnhh.2156$Jb6.925@trnddc03...
KurtG wrote:

btw, I was able to get the mandarin to eat frozen brine shrimp. Poor
thing must be starved. It should hold him for a few days until the
copepods show up.

I ordered some from
http://www.inverts.com/Merchant2/mer...Store_Code=CRA

$17.50 for a 4 oz. bottle, plus $15.00 shipping.

My situation is a bit different. I thought I had enough pods established,
so I ordered a Mandarin. My wife works near the store, so I sent her down
to pick it up when it came in. The store owner was on the phone, the kid
bagging fish put two in the bag, and Elisabeth didn't know any better. So
I ordered some pods and hope they'll co-exist ok. So far, one stays on the
left end of the tank, and the other one tends to roam. There are brief
fireworks when he/she roams over to the left end (which is to be
expected). Neither one seems to be losing or gaining weight.

George Patterson
Forgive your enemies. But always remember who they are.

Bill Marsh wrote:

HI George: Mybe you got lucky and got a male and a female. I have both the
male has a spike on his dorsal fin and the female doesn't She also has
lighter coloration on her head.

No such luck. I ran into a web site today with the same info you just gave. Both
of mine are male.

George Patterson
Forgive your enemies. But always remember who they are.

Hey George,
I checked this site. A couple of questions:

About how many copepods do you think you got with the 4 oz. bottle?

Did you add the whole bottle to the tank to promote a population? or are you
adding some everyday to feed your "couple"?

Do you refrigerate the bottle? or are you using it for some kind of culture?

I am dying for a Mandarin. I have Thousands of pods in my tank---but I hear
they can be depleted quickly. I also have a bit of an alga and plant
overgrowth---but now I`m thinking if I keep the tank just a little "dirty"
than the pods have plenty of places to propogate.

BTW---the tank is really cranking. Thanks again!
Stringer



I ordered some from
http://www.inverts.com/Merchant2/mer...Store_Code=CRA

$17.50 for a 4 oz. bottle, plus $15.00 shipping.

My situation is a bit different. I thought I had enough pods established,
so I ordered a Mandarin. My wife works near the store, so I sent her down
to pick it up when it came in. The store owner was on the phone, the kid
bagging fish put two in the bag, and Elisabeth didn't know any better. So
I ordered some pods and hope they'll co-exist ok. So far, one stays on the
left end of the tank, and the other one tends to roam. There are brief
fireworks when he/she roams over to the left end (which is to be
expected). Neither one seems to be losing or gaining weight.

George Patterson
Forgive your enemies. But always remember who they are.

StringerBell wrote:

About how many copepods do you think you got with the 4 oz. bottle?

Dunno yet - I placed the order a couple days ago. I expect delivery Wednesday.

Did you add the whole bottle to the tank to promote a population? or are you
adding some everyday to feed your "couple"?

I intend to dump the bottle in the tank. I can't imagine that the pods will stay
alive more than a few days in that bottle with no food.

I am dying for a Mandarin. I have Thousands of pods in my tank---but I hear
they can be depleted quickly. I also have a bit of an alga and plant
overgrowth---but now I`m thinking if I keep the tank just a little "dirty"
than the pods have plenty of places to propogate.

I've read that one should wait at least 8 months before adding a Mandarin, but
I'd bet that something like this bottle of pods can establish a population
earlier than that. I also read that a small pile of live rock debris (small
pieces) can give copepods a refuge. The article stated that one can stick a
piece of shrimp or something in the pile every week or so to feed them.

BTW - if you're seeing lots of pods, they're probably isopods, not copepods. A
big copepod isn't even as long as a pencil lead is wide (1 to 2 mm). I've read
that they like to eat diatoms, which are pinpoint size white critters that tend
to form a haze on the inside walls of a tank. I have tons of those, and there's
other stuff swimming in the tank that's the right size to be copepods. Who knows
what's in the sand.

Both my Mandarins are picking at the rock, sand, and algae, and they aren't
visibly losing weight, so I have my hopes up.

George Patterson
Forgive your enemies. But always remember who they are.

Your gonna be surprised at how many pods a mandarinis capable of
eating in short order.

I have a mandarin in a 10 gal tank by itself. Yep thats not a typo
either and its been in there for over a year now and doing fine. Its
never been fed anything that I put into the tank like brine etc on a
routine basis. On occasion I may add some brine shrimp and I have seen
it pursue them, but its main diet has been copepods. Unfortunately
the majority of mandarins die within a short period of time from
starvation. I have thought about putting this guy in a larger tank for
some time now, but its doing just fine for over a year so why mess
with it.


On Sun, 17 Dec 2006 21:55:03 -0500, KurtG
wrote:

wrote:
They could be, if they move.

Definitely not then. These are calcified to the rocks.

Hm, I wonder what other mis-information I accepted without questioning.
No wonder he wanted to sell his tank. I know he added a trigger to a
reef tank and ended up with limited live stock.

btw, I was able to get the mandarin to eat frozen brine shrimp. Poor
thing must be starved. It should hold him for a few days until the
copepods show up.

--Kurt



-------
I forgot more about ponds and koi than I'll ever know!

Tristan wrote:
Your gonna be surprised at how many pods a mandarinis capable of
eating in short order.

I have a mandarin in a 10 gal tank by itself. Yep thats not a typo
either and its been in there for over a year now and doing fine. Its
never been fed anything that I put into the tank like brine etc on a
routine basis.

That's great news for me, if I understand you correctly. Your 10 gallon tank
maintains an adequate supply of copepods for one mandarin? Then my 125 gallon
with ~130 pounds of live rock should be capable of supporting two. Is there
anything special you're doing, other than having a bunch of live rock in there?

George Patterson
Forgive your enemies. But always remember who they are.