A pregnant female will have a dark mark on her abdomen, near the anal vent. 0 0. She doesnt look very pregnant but it's been a long time since I've had guppies. When a guppy is pregnant, there will be a dark spot under the tail near the backside of the stomach.The dark spot is the guppyâs gravid spot.The gravid spot darkens and increases in size as the baby guppies mature inside the mother.. A guppy pregnancy usually lasts 21-30 days. How to Tell if a Guppy is Pregnant You can tell whether a female fish is pregnant or not, just by looking at it. to 90% she is pregnant. i don't know why she stopped. So, after mating with a male, a female guppy â¦ Dropsy or pregnant guppy? Male or not, it could be bloated (if not a pregnant female). 2:08. Typically, a guppy approaching the birth of her young will seek privacy and a â¦ Just about every time you buy a female guppy she pregnant. I thought this was a male but then I thought it was pregnant. The pregnant guppy is somewhat hard to miss for those who have familiarized themselves with those who are not with babies. A few days before giving birth, the gravid spot will appear black, due to the embryos' large, dark eyes. but it could be possible that she wont have very many fry. Lv 7. Source(s): experiance. i read online that it should take 2-6 hours but it has been about 12. did she give birth to more and â¦ Today, â¦ The mark is called a gravid spot. my male guppy was following her around. The belly will look like a large bubble at the rear, and the dark spot behind the anus will turn to a deep, large black this is called a gravid spot. my guppy has not given birth since. Messages 21. It becomes darker when the eggs are fertilized. was that causing stress? 1 decade ago. Thread starter #1 lanone New Member. It is an easily noticeable sign of pregnancy. I'm not too sure though. Pregnant guppy stopped giving birth. All I want for Mother's Day is a pregnant guppy No kitty, no hippo, no cockatoo, nor puppy No perfect yellow rose, nor reconstructed nose, No silver spoon from which to sup, No gold-etched china saucer and cup, No trinkets nor blankets, not even books No cell phone, new chair, nor shelves with coat hooks,â¦ the gestation period is 28 days, a few days more or less depending on stress level and water parameters. i found 2 fry in my tank this morning. A pregnant guppy's abdomen will also grow noticeably larger as she gets closer to the birth of the babies. These pics are from yesterday when it was pooping all day. is she stressed out? Your pregnant guppy will go through a 28 day gestation â¦ I just learned about dropsy today. Member. It may even affect her swimming ability. My guess is shes just a little chubby or the temperature is low so the pregnancy is slower. Kribensis lover. I can't tell, but that looks like a male lemon guppy, but it is to blurry to tell when i try to zoom in on the image, a better photo would help. ... Guppy - pregnant vs not pregnant - Duration: 2:08. andrewesquivel 108,932 views. Unusual behavior of pregnant guppy fish Things to keep in mind after the birth. It is a very familiar fact that female guppies eat the fry once they are born. A Guppy Having Babies - Duration: 8:16. How to keep female guppy from eating its own baby fry. Thread starter lanone Start date Aug 6, 2013; Aug 6, 2013.