Tropical Fish Keeping banner

Pregnant Guppy?

9K views 12 replies 9 participants last post by  bigali 
#1 ·
Well, after doing a bit of research I was fairly confident that al three of my fantail guppies were male. However I noticed that my largest one seemed to be getting....very fat all of a sudden. He/she(not sure which now...)isn't as afraid of the bigger fish and eats a lot, so I thought it might just be fat. But Its about a 50/50 chance I suppose that its pregnant, I have no honest clue. Its looks like my mollies did when they were pregnant, and no other fish in the tank is THAT fat, which is why I'm curious.
So, perhaps someone could give me a little hand? I'd like to know so I can move he/she if they ARE pregnant so that the fry aren't eaten...

(Heres the best picture I have, I hope it helps...)
 
See less See more
1
#3 ·
I would say yes (she) looks preg. An jamesy14 im sure that the reflection off the top of the water. lol
 
#4 ·
Yeah, thats just its reflection^^ And no, it doesn't always look that fat, its just a very recent bloat.
I talked to a friend and showed her the pictures and she said she was so positive its male that she'd drop dead right then and there if it gave birth. So I'm still not sure D: It doesn't look as fat now as it did this morning(when that picture was taken)and no fry have been spotted. So I suppose I'll just wait for further feedback....

(Here is another picture of he/she from the side, if that helps....)
 
#5 ·
Yep she looks pregnant! Congrats to YOU! your gonna get a load of fry.. Dont forget to transfer the fry to another tank! mommy guppies are nice but tend to est their fry! Good Luck!
 
#7 ·
That is a male guppy. look at the anal fin. Male guppys have a thin pointed anal fin and females dont.
 
#11 ·
Common livebearers are easy to sex once they are mature. The whole thing is based on the shape of their anal fins, the fins right next to where they eliminate their waste. Swordtails, guppies, platies, mollies and limias all have the same basic shape for a male and the same basic shape for a female. This is a picture of a male Heterandria formosa that also has the same fin shape for a male.The anal fin is long and thin and is correctly called a gonopodium.



This is a female of the same species with the typical triangular anal fin.



The pictures are a bit grainy because they have been blown up to show the fish. The actual fish are only about 2 cm long when full grown.

There is another less common group of fish called goodeids that are also livebearers and are sexed using anal fin shape. The generic name for goodeids is splitfins so if you see a fish with splitfin in its common name it is probably a goodeid.

The anal fin on this male Xenotoca eiseni is showing the typical split in the anal fin with the front part of the fin shorter than the back part.



The female Xenotoca eiseni in this picture shows the typical single triangular fin of a goodeid.



With good lighting, and being pulled back to show more than the fish, a male Xenotoca can look more like this. I love the colors they have when they are feeling safe in the tank. Unfortunately, when pulled back, the fin shapes are hard to pick out.

 
#12 ·
oh ya..i forogt...males have more color and longer tails and fins than females....
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top