Nannostomus marginatus (tiny pencil fish)

[Zenislev]

...
Anyway, here is the summary from the article, the best I can make out of dodgy online translations. There is a number of information omitted as I can't make out any sense, to those who could, feel free to add on. There are also some pictures in there, and citation of the pictures available in literature.
...
It will be interesting to see if some of your N. marginatus turn out to be different forms.

Thats very helpful bro. It would be nice to see more forms of marginatus appearing here in SG.

[CK Yeo]

Same fish? I named it N. marginatus for the moment.


ck

[hwchoy]

I thought marginatus should have very little red in the caudal.

[CK Yeo]

Probably not, but I am reluctant to put it as Nannostomus sp. since the trade calls it N. marginatus. Based on the information Quixotic provided, couldn't it be one of the forms of N. marginatus?

ck

[hwchoy]

Probably not, but I am reluctant to put it as Nannostomus sp. since the trade calls it N. marginatus. Based on the information Quixotic provided, couldn't it be one of the forms of N. marginatus?

ck

could well be, as I have seen some variations myself. scientists normally do not put the specific epithet (in case they are proven wrong ) when they aren't sure so they willl just put "sp."