Why can't you buy guppy females at petland?

The point was that it is possible to be both male and female. It happens in human nature and there is no reason as to why it can not happen in other species. So the sex changes that can happen in fish could in fact be down to the fact that they already have the required hormones and equipment that would enable them to be both fully functioning male or female.

The way things work in what i have previously mentioned, is that the blood type changes gradually back and forth enabelling the body to support both sets of organs and allowing the resulting body to function in both ways as nature bore it.
 
Right, but that doesn't matter if it hasn't been observed. One can speculate forever about how things *might* be, but there are in-fact ways to determine how things actually are.

So far, reality doesn't indicate this happens(edit: In guppies). When and if it does, it will be worth speculating how and why.
 
Guppies are not routinely male and female. They have been dissected, you know! A hermaphrodite or chimeric male/female guppy would be as rare and abnormal as your friend was.

In fish which can change sex, they are indeed hermaphrodite from the beginning. Guppies are not; this is why normal guppies cannot actually change sex functionally.

Oh, and there aren't male and female blood types. They're the same.
 
It was all speculation to begin with. lmao. The whole 50 50 debate was so far off so far as breeding guppies in the general aquarium lmao. Anyways, no matter what proof folks think they can provide with regards to it being 'unusual' that the female ratio was higher in not only mine but other peoples tanks kinda disproved the 50 50 point. So I think im done now with the discussion lol.
 
This thread has morphed from store policy to hermaphrodites.... :rofl:
 
I'm afraid the Ozzie site is simply wrong, unless they can point to some research which hasn't made it anywhere else. The 50:50 point remains interesting; if you and others are getting a surfeit of females I personally want to know why, because it is not actually normal for guppies. What is interesting is that my very variable and mixed strain guppies have always produced around about 50:50 ratios; the skewed ratios seem to be associated with more refined strains. No-one's denying what you're getting, but it isn't seen in wild populations.
 
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