What species of SD is this?

[peewee]

It's mine but I'm not so sure of what species it is...was sold as a generic silver dollar

 

[tlindsey]

View attachment 1454574
It's mine but I'm not so sure of what species it is...was sold as a generic silver dollar

Generic Silver Dollar lol. That looks like a Spotted Silver Dollar.

 

[bettapatua]

One of my species dream. Metynnis lippincotianus or maculatus, i'm no expert for sure but from what i've read somewhere in this forum, there's 2 different spotted silver dollars. The difference is their body lenght. Anyway, they're beautiful fishes i like to keep someday ?

 

[FJB]

I would need additional images to be able to venture a guess id. "Regular SD" is no id at all, as there is no such thing as 'regular SDs' if we consider that there are at least 16 species, most quite variable and not quite well known, and that we have no idea where the fish comes from.

• With the single photo you provided, I can only say that it is a FEMALE of the genus METYNNIS, and that it indeed may be one of the "spotted Metynnis" (there are several - more than 2- spotted Metynnis that appear in the hobby, although maculatus and lippincotianus are indeed the most common). But even the naming as 'spotted SD' is premature on the basis of the single image.
• The fact that it is a female makes it harder to id, as no humeral spots are seen in most females, or much less so that in males.
• The 'spots' on your fish seem quite large, making it unlikely to be M. maculatus. What is often referred to as "M. maculatus Peru" has larger (and fewer) spots that 'regular maculatus', and may not be maculatus at all.
• The size of the spots are about the relative size of those in M. lippincotianus. However, I would like to see better pictures, because they may not be actual "spots" in the sense of maculatus or lippincotianus, but more like "blotches" in the sense of M. altidorsalis. In fact, I suspect it may be a female M. altidorsalis.
• The profile of the forehead, with little or no indentation at the forehead, also suggests it is not M. maculatus.
• Your fish has a very nice and long, dark stained dorsal fin, which is unlike that of M. lippincotianus or maculatus. I believe your fish was in a bit of "display coloration" when photographed, with its dorsal stained black, and the caudal fish rimmed with black. Outside of 'display mood', probably the fins are not as dark.
• I suspect your fish is wild caught.

If you post several images with the best focus possible, it may be possible to further try to id your fish, which looks very, very nice. In fact, if you can, please show additional pictures of your other dollars - I see at least one thin black bar, a female red hook and a couple more I can't make out. Nice fish, I look forward to seeing them!

 

[fishguy1978]

None of my M.L. nor my M.M. have a streamered dorsal. Your SD looks similar to picture #2. The SD with the red spot behind the eye and defined spots are M.L. F FJB and I are still unsure on ids for some of the others. Metynnis family though.

 

[FJB]

As fishguy1978 said!

I would add - several Metynnis species have seasonally extended dorsal fins (i.e, with streamers), which become smaller (not streamered) outside of the reproductive season. However, in your fish (a female), it appears to be beyond a streamered dorsal, and more like a permanent condition. However, this assessment may be in error.
The more I look at your fish, the more I feel it is most likely a female Metynnis altidorsalis Ahl, 1923, and not quite full grown.
What size is it?

 

[bettapatua]

I would need additional images to be able to venture a guess id. "Regular SD" is no id at all, as there is no such thing as 'regular SDs' if we consider that there are at least 16 species, most quite variable and not quite well known, and that we have no idea where the fish comes from.

• With the single photo you provided, I can only say that it is a FEMALE of the genus METYNNIS, and that it indeed may be one of the "spotted Metynnis" (there are several - more than 2- spotted Metynnis that appear in the hobby, although maculatus and lippincotianus are indeed the most common). But even the naming as 'spotted SD' is premature on the basis of the single image.
• The fact that it is a female makes it harder to id, as no humeral spots are seen in most females, or much less so that in males.
• The 'spots' on your fish seem quite large, making it unlikely to be M. maculatus. What is often referred to as "M. maculatus Peru" has larger (and fewer) spots that 'regular maculatus', and may not be maculatus at all.
• The size of the spots are about the relative size of those in M. lippincotianus. However, I would like to see better pictures, because they may not be actual "spots" in the sense of maculatus or lippincotianus, but more like "blotches" in the sense of M. altidorsalis. In fact, I suspect it may be a female M. altidorsalis.
• The profile of the forehead, with little or no indentation at the forehead, also suggests it is not M. maculatus.
• Your fish has a very nice and long, dark stained dorsal fin, which is unlike that of M. lippincotianus or maculatus. I believe your fish was in a bit of "display coloration" when photographed, with its dorsal stained black, and the caudal fish rimmed with black. Outside of 'display mood', probably the fins are not as dark.
• I suspect your fish is wild caught.

If you post several images with the best focus possible, it may be possible to further try to id your fish, which looks very, very nice. In fact, if you can, please show additional pictures of your other dollars - I see at least one thin black bar, a female red hook and a couple more I can't make out. Nice fish, I look forward to seeing them!

These are good informations. Thanks for sharing. Make me more curious about SD's and still want to keep them one day!