Potamotrygon Leopoldi - Sao Felix

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Thanks for the feedback folks..

So rather than classifying them by their collection locales, they would be better off named by variation type? I think so..

The collection localities of the black rays is very interesting, and I see why banning exportation is understandable..



Interesting Sidenote: I just found this article from IRI Climate Digest concerning Brazil..

South America - Brazil - Abnormally heavy rainfall in the Brazilian state of Para caused flooding along the Tocantins, Xingu and Tapajos Rivers, all of which are Amazon tributaries. The flooding, which occurred during late-March to late-April, was blamed for the deaths of 8 people and affected another 116,000. The climatological rainy season in that region occurs during January-May. (AFP, March-April Precipitation Percentile Map)

So.. To say these rays don't hybridize because of their localities is questionable..
 
Miles- I think if you know the locality where a specimen is collected that it would be nice to include that info, and if the location is suspect you can note that.

Reguarding flooding in the Amazon basin- not all the fish enter the forested area when the Amazon overfills it's banks. I don't know what the stingray's behavior is. Would be a good question for Patricia at the conference in August. Also- the rivers definetly overfill their banks, but that doesn't necessarily mean that say the Xingu and the Tapajos are connected. It looks small on a map, but there is quite a distance between the two.
 
think they are around 200 miles apart at their closest points, not sure how much of that could be filled in during the wet season.
 
beautiful leo pics..... i thought the back diamond was just a born varient not a local specific ray....
 
Gorgeous
 
In China, we spit the P.leopoldi species into four varients.
1.The "Common" Black ray with it's 321 pattern at the back (黑白魟)
2.The "Black Diamond" Black ray with it's "crown" of small dots at the edge of the disc(皇冠黑白魟，meaning "Crowned Black Ray")
3.The "Galaxy" Black ray with lots of small dots near the center of the disc.(太空魟)Previously posted as Tyson's 'Black Isle'.
4.And another varient with dots like hoops, don't know what you guys call them(甜甜圈黑白魟)
 
mshuangchao;1329919; said:
In China, we spit the P.leopoldi species into four varients.
1.The "Common" Black ray with it's 321 pattern at the back (黑白魟)
2.The "Black Diamond" Black ray with it's "crown" of small dots at the edge of the disc(皇冠黑白魟，meaning "Crowned Black Ray")
3.The "Galaxy" Black ray with lots of small dots near the center of the disc.(太空魟)Previously posted as Tyson's 'Black Isle'.
4.And another varient with dots like hoops, don't know what you guys call them(甜甜圈黑白魟)
Click to expand...

If I may, I would like to expand on your classification alittle.

For Point 1, some fishes may not have the 3-2-1 spotting arrangement.. (although most do)

Some just have many spots of similiar size... And some have many spots of different sizes(primary and secondary spots)... Do note that the smaller spots are not tiny spots like the Black Island.. I'll post a pic when I can get a decent shot of it.
 
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