3 years ago #1
PJphilly
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Hi to all,
I bought 4 male guppies, two male dwarf gouramis, and five (I think) male Black Skirt Tetras. Today, my son discovered what seemed to be a guppy fry. It is not (as far as I can tell) a Black Skirt Tetra.
Can anyone explain this to me? Something like what happened in Jurassic Park I where all the dinosaurs changed their sex?

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3 years ago #2
Calabalooza
Gold Member
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No, guppies cannot change their gender, you might have purchased a pregnant female by accident.

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3 years ago #3
PJphilly
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Thanks for the reply. It was kind of a tongue-in-cheek comment. I know they can't, but the puzzling part is that I bought 4 male guppies. Don't female and male guppies differ in their appearance? There must be a female with the same coloration of males.

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3 years ago #4
tropical_tiffini
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The females can have just as bright colors as the males so it's very possible that you bought a female by mistake. An easy way to tell male and <email> -bearers apart: look at the anal fins. The males have a gonopodium which looks like a stick where the females have a fanned anal fin.

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3 years ago #5
harryhashighpants
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no
Could you use a better word than sex like for a sample Gender

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3 years ago #6
PJphilly
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Thanks, tropicaln00b. I'll check their fins.

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3 years ago #7
PJphilly
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They're synonyms. What do you have against sex?

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3 years ago #8
tanya
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one must b a female it is hard sometimes when the female looks like the males pics would help

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3 years ago #9
harryhashighpants
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PJphilly wrote:
They're synonyms. What do you have against sex?


Sex as in
KISSSSSSSSSSS sex
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3 years ago #10
Calabalooza
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Pls dont start a arugement, it isnt worth the typing!

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3 years ago #11
PJphilly
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Calabalooza wrote:
Pls dont start a arugement, it isnt worth the typing!


Okay, objecting to the use of the term sex is downright silly and a bit prudish. But I didn't mean sex as in kissing as Harryhighpants suggested.
That said, it seems that livebearers can change sex (or gender, if you feel more comfortable with that term).
This link is to a scientific article that explains how this process occurs. http://www.jstor.org/discover/10.2307/1310421? uid=3739864&uid=2&uid=4&uid=3739256&sid=21100736298401
PS: Dr. Shapiro uses "sex" instead of gender.
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3 years ago #12
johnarthur
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This link has drawings and photos that clearly indicate gender differences for live bearing fish:
http://www.myaquariumclub.com/breeding-guppies-part-2- 786.html

Some live bearing fish seem to change gender, some aquatic critters actually do, and others are capable of asexual reproduction (parthenogenesis). How about that for a two dollar word.

Word preferences aside, argumentative postings accomplish nothing and often get deleted. Differing opinions are welcome when expressed in a polite manner.

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3 years ago #13
PJphilly
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Thanks Johnarthur for the level comment. I didn't mean to be disrespectful, it's only that you could infer nothing else form the word sex, given its context, other than sexual differentiation. The request to use gender was redundant, to say the least.
Now, as to the fish, I can see only one with the gonopodium. The are quick swimmers and it's difficult to single them out.

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3 years ago #14
Calabalooza
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Well, you are going to have some fry then! Guppies can produce up to 50 fry a batch, and they can save up the (you'll know what after I finish) for two more batches!

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2 years ago #15
drunkcatfish
Guest

Try turning your temp lower they will swim slower to stay warmer than you can see them better

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2 years ago #16
johnarthur
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Sorry to disagree with that idea, but changing aquarium temperature significantly above or below the comfort range of the fish species will have a negative impact on their health.

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