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Front Page · Everything · News · Ask Guppylog · Diaries
Gestation Periods

Behavior
By NewGupBreeder
from the NewGupBreeder department, Section Ask Guppylog
Posted on Thu Feb 05, 2004 at 10:57:22 AM PST
im having a problem trying to figure out when my moms are expected to deliver



here is an example...i pick my trio who i want to breed on the 1st, and assuming she gets pregnant she will deliver on the 29th or 30th...right...basically im having a problem determining when to start the gestation period the day i put her in w/ the male  or does it take a few weeks/days for her to get impregnanted...i ask because 2 females look pregnant but will not DELIVER...its been well over 28-30 days!!!!!

P.S. its not the male he is well...very frisky and has been used to breed before...water temp is 80 i change water every other day i feed bloodworms and brine and flake!!!

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Gestation Periods | 9 comments (9 topical, 0 hidden)
Re: Gestation Periods (none / 0) (#12)
by grizabella69 on Sat Sep 02, 2006 at 11:52:17 AM PST

Hi, I just wanted to add my own question here after looking everywhere and can't really find someone else in the same position as me - so sorry if it's wrong ;)

I have two pregnant guppies, one has been pregnant for about 5 months and the other for about three months....
And they STILL won't drop!
I have them in a seperate tank to the rest of my fish, with plenty of plants to hide in... I check my water pH, nitrates etc etc, the temperature is fine, the food is fine, EVERYTHING is fine they just will not have their babies!!! The 5-month one has had fry before - once she dropped 12 and the other time it was just the one.... The other one hasn't given birth before.
The one who's been pregnant the longest looks massive - i think she must be ready to burst.... is there anything I can do to speed things up for them?



Re: Gestation Periods (none / 0) (#11)
by jetta3461 on Mon Feb 23, 2004 at 07:32:25 PM PST

It's a matter of time and waiting. calm yourself and wait. She will drop soonr or later. Hakuna Mata! LOL srry I had to do that:)!



Re: 88 degrees?? (none / 0) (#10)
by Angelee on Mon Feb 09, 2004 at 10:07:22 AM PST

There was research done on this subject in the eighties.  Some of the breeders swore by 82 -84 degrees and others by 76 degrees, some even less at 74 degrees.  The 'cold breeders' were convinced (for the sake of science) to up the temperature gradually in a couple of their tanks until it reached the higher degree, while the 'hot breeders' did vice versa.  (Ceteris paribus, all other things equal)  Each found that there were certain advantages to doing one or the other.  One of the disadvantages, however, was the guppies in the hotter tanks had a shorter life span, as they matured and aged faster.  (As a consequence of this you had smaller fish, as  well.)  Another interesting result was in the number of fry produced.  The same fish produced more fry in the colder tanks but, had slightly longer gestation periods.  Another disadvantage to this, and it wasn't mentioned, is that if you happen to need to raise the temperature due to an unplanned circumstance... you have much less playing room for temperature variance.  
"The Rocky Mountain Gupster" ANGELEE


Re: Gestation Periods (none / 0) (#4)
by Angelee on Thu Feb 05, 2004 at 10:43:04 AM PST

     I know they say that one of the tricks for delivery is to increase the temperature, but yours is already pretty high.   I suggest gradually lowering it a few degrees 76-78.F.  
     Also, I have noticed that mine will deliver sometimes upon a water change.  25% or 30%. I think someone else said that their gupps like to 'play in the new water'  as it 's being filled., and mine are the same way.  I add mine really slow.   (I can make adding 5 gallons of water last forever.  My fish like to play in the trickles and I like to watch them when they do.)  Just be sure not to accidentally chase them around the tank during the water changes or the delivery may be because of stress.  
     
"The Rocky Mountain Gupster" ANGELEE


Re: Gestation Periods (none / 0) (#1)
by nathan on Wed Feb 04, 2004 at 09:36:06 PM PST

you do not need to change out water that much
you only need to change out 25% of the water once a week. and some times it takes longer for the female to deliver. if they are pregnant, just give them time. you could prolly put the temp down to 78. good luck
Nathan.



That is a terrific water change regime! (none / 1) (#2)
by unclescott on Thu Feb 05, 2004 at 02:23:48 AM PST

I know professional type aquarists (a discus guy selling $3,000 @ month) who change 95% of the water daily. (He had the temperature controled and the water run through a carbon pre-filter.) People raising guppies for show often have to keep a similar changing schedule.

A guy new to killies did that and got incredible growth. (We are more like that when new to the hobby.) More power to you if you can keep up that schedule.

Mother nature changes 99.9% daily too. ;)

Several people on one of the mailing lists have been building automatic water changing systems which will do that daily or continuously for 20-60+ tanks.

Female guppies, according to Dr Houde, can be impregnated the first 2-3 days post delivery. They can carry viable sperm for up to six batches (six months plus). If your females were pregnant before by the same male(s), they should be again.

Sperm from recent matings are supposed to be more viable than that from previous matings. This could be reflected in the colors of their off-spring.

Come to think of it, if they delivered twice before, they already have the means to become pregnant again!

Fish don't read the books. I'm as stumped as you as to why they haven't delivered. Probably they will do fine.

Are they over a year old? One could speculate that they might begin to slow down a little with age.

There is a remote medical explanation as to why they haven't delivered. Rather than alarm you any more, let's just see.

Please keep us posted.

All the best!

uncle scott

[ Parent ]



Re: That is a terrific water change regime! (none / 0) (#3)
by maggie1270 on Thu Feb 05, 2004 at 04:38:49 AM PST

Yeah but US, I would have to believe that daily water changes like that might ubrupt the biological system in the tank wouldn't it?  I mean, maybe not as quickly in an established tank, but wouldn't it eventually?  I don't know about you, but my water has to sit for a couple days before I add it to the tank.  With that in mind, if I did this daily, I'd have a gazillion containers around just to be able to keep up with that regimen!  Athough, it sounds like I could be wrong...
Maggie
[ Parent ]


Wow! Maggie you are working this through (none / 0) (#7)
by unclescott on Thu Feb 05, 2004 at 07:06:18 PM PST

decades before I did! (Maybe centuries!).
First of all, I agree, for many of us storage and conditioning of water is the big glitch. It used to be in some towns (with well water) that you could crank the faucet to 78 degrees and just run 20-30% into the tank!

NewGupBreeder may be blessed with a water source like that. He lives (if I vaguely recall) not too far from where I used to run that well water to the tanks. (I never grew up, but did grow larger in Glen Ellyn, IL. down a couple roads from NGB).

NewGupBreeder do you have well water? Or did they switch you guys over to Lake (Michigan) water? Have you any idea what your municipal water department puts in the water? (As a citizen, you have a right to ask - nicely - for a copy or summary of the latest statement sent to the EPA.)

Do you have a couple of containers to store your water short term? Last count, you had four tanks? Are you able to do changes like that on all of them?

Maggie, some of those heavy hitters set vats on a platform - gravity flow is a beautiful thing. I know of at least one guy with at least one plastic cattle watering trough and a portable sump pump rigged with a hose and extended cord with a switch in it.

My discus buddy had a 100 gallon circular tank like a water softener, but that was mostly for holding R.O. water he mixed in with a sump pump/hose. His tap water was slowly run through an industrial sized household carbon filter.

When German author Steffin Hellner (Killifish: A Complete Owner's Guide on Barron's Press) mentioned that he did 90% daily changes with soft water, he was asked, "How in the world can you get away with that?" He responded that he couldn't if he didn't do that most every day, because the chemistry in the tanks would begin to drift too significantly from the water supply.

Those aren't things you and I are likely to be able to do.

I have a couple of FOOD QUALITY 50 gallon drums bleached, washed out and let sit all last summer, fall and winter. Now where in the world can I put them?

Now more specifically to Maggie's excellent question on the bacteria: Most of the good guy bacteria in a tank are on the tank sides, bottom, gravel, plants, and whatever else is in there. Only a couple of percent of that bacteria is in the water. That much could be naturally replenished overnight or in the afternoon following the water change. That surface area thing is why filters are so important. Charcoal (in the week after it is used up as a chemical filter), sponges, filter floss (or polyester quilt bunting) or small lava rocks in a box or trickle filter have an incredible amount of surface area. Those places are where a lot of the biological shaking and baking goes on.

In nature streams are obviously changing the water all the time. Stephen Meyers (sp?), pond maven of AFM (Aquarium Fish Magazine), noted that "wild ponds" such as those found in a woods are full to the level of the water table. This meant that there was a daily water exchange of about 90% ! All of the surrounding soil, the leaves, plants and sticks in the pond were surface areas for good bacteria.

Storage of something as boring as water is tough. (Our house was built about 50 years ago. Looking at the storage given us, I can only guess that the builders assumed that everyone would have two pairs of shoes and three changes of clothing! Families would need only one car and two electrical outlets per room.)

For your consideration, and maybe a couple of ideas, may I refer you to the following GL Log?

 What do you use to season water?  
posted by unclescott on 10/29/2003 11:40:10 PST

Also - and I know this sounds goofy - but the stores are probably stocking water carboys for campers in the outdoor sections. If you shop around you can find three gallon ones (I use them sometimes to take tank water to fish shows) or five gallon ones, which are more space efficient, but harder to tote and use. Farm supply stores have all sorts of BIG containers.

I also have some of those 5 gallon containers that drinking water services use. I take water from my seasoned 32 gallon trash cans (set on old styro pieces for insulation and each equipped with an underwater heater) and siphon it into the five gallon water jugs or a 3 gallon bucket either for additional storage or to directly siphon from to lower tanks. I free up the old wooden stool and spot the water container on top to siphon into lower tanks.

I mentioned the 50 gallon barrels from a food processing company. Bakeries will sell pie filling buckets fairly cheaply. Other food places may have other cheap containers available. Some plastics leach "plasticizers" which are not good for living things. Food quality stuff is almost always safe.

One of my old computer boxes (which the family thinks is fill of computer stuff) is full of extra gallon milk and fruit jugs. [The monitor box is full of filter stuff ;) ]

Those milk jugs were soaked in hot water and the tops were cut off with a sharp paring knife. I did bleach them to get rid of the milk. Because "God only knows" the exotic chemistry of some of my elderly tanks (one going for over 30 years and I'm still 23) I use a piece of hard tubing attached to some of that silicon flexible tubing to g-r-a-d-u-ally siphon new water into a tank.

In the meantime I can feed the fish or check the computer. (Ten of those siphons at once and I can also stop by the little boy's room.)

I'll bet other GL people have yet other suggestions for holding and seasoning water.

All the best!
u.s.

[ Parent ]



I'm gonna borrow the computer box idea. (none / 0) (#8)
by Angelee on Fri Feb 06, 2004 at 10:42:26 AM PST

I didn't even think of that!  I have old milk jugs, even a few of the old returnables from the dairy stocked up high in the kitchen.  Everytime I turn around my hubby is throwing them away (growlll). I needed a new hiding place.
"The Rocky Mountain Gupster" ANGELEE
[ Parent ]


Gestation Periods | 9 comments (9 topical, 0 hidden)
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