Potamotrygon magdalenae ?

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danzx23

Gambusia
MFK Member
Apr 20, 2008
140
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st. louis
Potamotrygon magdalenae or Magdalena river stingray .. im about 90 % sure thats what i have {il post pics tomarow} by comparing it the pics on this site http://www.amazonasrochen.ch/page/rochen/arten/magdalena.htm

are they the same as orbinyi by chance? mines very lighit brown with similar faint circles like the pics on the website
can any one give me info on them in english lol size , how active they, are they god eaters?, age or size till sexualy mature?

thanks
 
that would be cool if it was i love true histrx and motoros yet im pretty sure mine is wild cought but not poistive
 
This is a great question.. check out the Magdelenae on Mikofish.com ... who really knows for sure? I think its one of those species that was identified as a new species, but technically should be grouped with another species like Orbignyi. This has happened quite a bit with the potamotrygon family because technology during the time of exploration was nill and they identified based on patterns and were unaware of potamotrygon families amazing polymorphism..

Either way you have a nice looking brown ray that will get in the 16-20" range.. maybe larger

I've brought this up before, do some searches for Magdelanae to hear discussion on the subject
 
danzx23;2385262; said:
ok on Mikofish.com i could only find motoro and Orbignyi have they changed the name?
Click to expand...


the link takes you to the ray in queston... well whats thought is the ray..
 
post good pictures of the ray you have so we can ID it for you... disk and tail shots..
 
Mosquito;2383952; said:
hm.. i've got one looks like this. i thought it was motoro X histryx -.-"
Click to expand...

post some pix of it

IMO the ray that is pictured is an orbygingi/ Humerosa style ray, and ill agree with miles that the naming of these rays are all messed up
 
The Belle Isle Aquarium in Detroit, Michigan has been breeding what they refer to as "dwarf stingrays" since the late 1970's. In their literature they refer to the scientific name of these rays as potamotrygon magdalenae.

The rays are what the hobbyist would refer to as a retic. I am not sure if I can still find the article but, it claimed that in the late 70's a stingray idnetification paper (for scientific journals) was published that incorrectly identified potamotrygon magdalenae as potamotrygon reticulata.

If you hear magdalenae referred to by the scientific community, zoos or aquariums, you will find that they are referring to what we know as a retic.

The bottom line, taxonomy with rays sucks.

Colin
 
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