Wild guppies are native to Venezuela, Antigua and Barbuda, Surinam, Brazil, Guyana, Colombia, Barbados, Trinidad and Tobago. All other locations on this globe have feral wild guppies.

Note:

Native wild types
These are guppies indigenous to the area where they were caught. The range of native wild guppies are restricted to the Caribbean  and North Eastern South America.

Feral wild types
These are guppies which were introduced by man to a different wild environment than the endemic areas. 

True wild types
Both native and feral wild guppies are true wild guppies and are taken directly from the wild. 

Wild descended types
These are guppies which were produced by a colony that has a direct line to the true wild population.

In this section wild guppies other than "Poecilia reticulata" will be described .

Poecilia obscura
The third recognized order of wild guppies is named Poecilia obscura. Also known as Oropuche guppy. This strain is to be found in the Oropuche river system in North-eastern Trinidad. But also in other river streams like Rio L'Ebranche,  Rio Seco, Rio Matura, Rio Quare and Rio La Seiva. The two last mentioned are part of the Oropuche river system.
Most of these Poecilia obscura occur in the shallow parts of the streams and in ditches. 

I am keeping two groups, one of the Matura river and Orupuche river  (N 10° 43.052’; W 61° 8.871’).

Also with this strain a lot of phenotypes among the males occur. The colors, patterns, fin- and tail shape differ a lot.

The pics above shows males with almost a similar pattern. However, below is shown a collage of how different these phenotypes can be.

Paramaribo guppy (Poecilia kempkesi)
The Poecilia kempkesi originated from Paramaribo in Surinam. The Poecilia kempkesi is also called Surinam guppy or Paramaribo guppy.
The colony I've started with were purchased at an auction in Sauerland (Germany) back in 2014. The data that goes with this colony is location Anton Dragtenweg, Paramaribo in Surinam (coll. Fred Poeser).

There's an undissolved discussion whether the Poecilia kempkesi is really a separate guppy species or a Poecilia reticulata and should be called Poecilia reticulata cf. or Poecilia reticulata kempkesi". With what we know about this species, we assume that it's true that we are dealing with a separate guppy species.

These guppies did very well at my place but somehow they just didn't want to reproduce. It took about 8 months before the first offspring were born. 

In spring 2016 I've kept them also outside. Despite of the slow start of spring (with all the lows you can imagine), the juveniles did amazingly well outside. Because of the fact that they were put in a glass cube instead of PE tank and kept on the south side, the temperatures do fluctuate more. Also more algae growth and more coloration of the water is at hand in this situation. Nevertheless, they were doing just fine in there.

Overhere an already adult male coming from the outdoor tank.

There has been a questionnaire wether Poecilia maculatus (Winge) or Poecilia kempkesi is the pure Paramaribo guppy. Research (by Fred Poeser) concluded that Poecilia kempkesi is the correct pure form.

The next pictures (lecture Fred Poeser at the Poecilia Netherlands Meeting, Asperen 2016) shows that Winge's P.maculatus was a crossbreeding with Poecilia reticulata.
Conclusion of Fred Poeser: Poecilia kempkesi with a dot is the pure form and P.maculatus without a dot is a hybrid.

Despite of the dots and the orange or red spot on both sides of the males, the position of the dot(s) can differ and so does some other markings. There are males with some dark marked dorsals but also with clear dorsals. The ones I'm keeping are with a red or orange maculatus blotch on both sides.

Above and below:

On September 12th 2020, Fred Poeser brought me a wild molly in the plastic jar that he used to keep the Poecilia kempkesi in while bringing them from Surinam to the Netherlands back in 2005. The initials AD refer to the address location in Paramaribo (Surinam) where they were collected.

He gave it to me with a smile while saying that I had to treasure this jar.

Note: Fred Poeser has visited me in July 2020 and confirmed as well that these are indeed Poecilia Kempkesi with the maculatus blotch. I'd like to mention this in case, someone is doubting the phenotype.

Micropoecilia species

There are a lot of discussions going on whether Micropoecilia species should be considered Poecilia species. For years, Micropoecilia is determined to be a subgenus of the Poecilia genus. Personally, I prefer to still label them as "Micropoecilia". 

Orangeline
This Orangeline guppy is to be found south of Ciudad Bolivar, 50km east of El Tigre at El Salto, Venezuela.

For years ago this strain was considered being a Micropoecilia strain. Nowadays, it's considered being a Poecilia reticulata. But if I look at the male's features, it does resemble more like a Micropoecilia than a Poecilia reticulata. However, the females are more similar to Poecilia reticulata than Micropoecilia. For sure, it's a speculation coming from my side... But personally I do think that this could be a natural hybrid between Poecilia reticulata and Micropoecilia. 
What's also peculiar is that they prefer a lower pH.

The first specimens I've kept was in 2014. Purchased them from Peter and Astrid Raschke.

Micropoecilia picta

Below we've a couple of swamp guppies (Micropoecilia picta / Poecilia picta). This species is also known as Scarlet livebearer, painted guppy, Poecilia picta and peacock livebearer.
These fish are in general hard to keep. Ever since this year (2011) my Micropoecilia pictas are doing really well again after a few months of disappointment with them. But I've started keeping M.pictas already in the 1990's. I've lost some adults but in some way I've got my third drop of fry of the ones which were left. And the offspring seem to stay fit just like their parents. I've noticed that these fish are kept best when the water is kept brackish. At least, that's the experience I have with the specimens which came from Asian fish farms. In the wild it depends on the location of their habitat if we're dealing with fish coming from fresh water which is soft till moderate hard or brackish waters which ranges from moderate hard till hard water conditions.

I hardly refresh the tank in order to keep them well. I even overfeed them on purpose. The food that's been left untouched seems to have a better influence on the condition of the water which they need. I only refill some water in case some water evaporates from the tank. With these fish just turn around the tradition to keep them well and bring them to a breeding level. The best temperature you can put these guys on is 28°C to keep them well when coming from Asian fish farms. I've had these fish at lower temperatures but in some way that didn't work for them. The specimens that came from Surinam which I've also kept, were doing fine at water temperatures between 20°c - 25°c. Higher temperature rates were also no problem. But the Surinam specimens had a longer lifespan when kept between 20°C - 25°C.

I myself am keeping mainly the red version. This red version the way they are bred in Thailand does not occur in the wild. There are wild specimens that are pale red till orange, besides the grey, yellowish, brownish and even plain specimens. But although my adult males are red and some females have a red shining on their bodies, the male offspring can become red or even have the wild coloring instead. So, no guarantee on that one!

An adult male can reach a length of approximately 2.5 cm and a female reaches up till 6 cm in length. It originates from South-America till Central-America. And to be more specific they occur in Surinam, French Guiana, Guyana, Trinidad & Tobago, Brazil and even Venezuela.

The female Micropoecilia picta looks a bit similar to a female guppy but actually it's got a slimmer body shape. Further on, the dorsal fin is situated a bit more backwards in comparison to a female guppy. Some have a peacock on their shoulders.

Above: On the right shows a grey wild colored male.

Below: Some color morphs.

There's a rare phenomenon when it comes to reproduction. There are Picta females that reproduce as a regular ovoviviparous livebearer and there are Picta females which are superfetative.

What's also peculiar is when a Picta female is pregnant and almost due but at some point she's not comfortable to deliver, she may absorb the embryos through her body. This does happen to some other ovoviviparous livebearers as well. And it doesn't affect the female at all when she absorbs the embryos

Micropoecilia parae
The Micropoecilia parae occurs in Guyana and Surinam. It inhabits fresh and brackish waters. Mostly in swamp areas and slow flowing streams like creeks. Firstly described by Eigenmann (1894).
In the beginning of the 21st century I had two couples of the Micropoecilia parae melanzona var red from an acquaintance of mine. And I got some yellow versions from somebody else who couldn't keep these fish alive. I've found out that he and the other acquaintance of mine had the same problem. Even I was struggling to keep them alive.

But the last male left was put together with a female blond endler and a grey female black bar endler. At some point there swam blond offspring in the fishtank and later on it turned out that those offspring were fertile hybrids of the blond endler and the Micropoecilia parae. The males had the typical red line on the side and the flame upwards in the tail just like the father had. Of the F1 came an F2 but with a grey base again and the red pattern on the sides remained.
But at the end I had still one specimen left of this strain. But again, it does prove that hybrids of far related species can be fertile!

Above: Adult males.

Above & below: Some Micropoecilila varieties.

In the wild, the Micropoecilia parae comes in multiple color varieties. The photo below shows a yellow variety (photo from the internet). There are even specimens in the wild that are blend colored. With a marking somewhere on the body.

Above: Micropoecilia parae var yellow, males