Sexing Dicrossus filamentosus

[joe]

Thinking of getting a pair of Dicrossus filamentosus. So how do I choose a pair if none has already formed up? Are there colour differentiation or some features I should look for? Any help would be great for a newbie like me

[mickthefish]

there is joe, if the extentions are absent look at the ventral fins, males are clear the females are a reddish in colour,
mick

[joopsg]

Not all male filamentosus have lyretail, but i have a way to get a pair. depend on the shop u purchase and the stability of the fish. cos dun want to inflict loss to the lfs who are willing to bring in the fish. btw fish collect from different location`, have different marking on the caudal.

[joopsg]

reddish ventral onli apply to female which have spawn before.virgin female dun have it...

[Quixotic]

Read on Kribs (with a pinch of salt) that the reddish ventral fins depend on the locality. Hmmm... *shrug*

With regards to the " red ventral/anal fin mythology " the answer may lay in the original population(s) of your fish. In TFH, April 1996, Roland Schreiber refers to an observation that females of the Rio Negro system exhibit the red ventral/ anal fins after first spawn while females of the Orinoco population retain their transparency. The previously mentioned Linke and Staeck confirm this in their book. The males of these two populations also show differences in their tail patterns.

joe, some good reads, http://www.thekrib.com/Apisto/D-filamentosus.html.

[joe]

joe, some good reads, http://www.thekrib.com/Apisto/D-filamentosus.html.

very good read ... thanks ... best is get a few and hope 2 pair up!!! heheheee

[mickthefish]

i beg to differ, over the years ive had these fish , i always buy 6 fish and these are immature ones i pick three with the red ventrals, once home they are seperated into 3 tanks , in each tank one red ventral and one clear are placed and ive never failed to get a pair and breed them, if this is mythology as the book states, was it just dumb luck that i could sex them every time?
mick

[joopsg]

Actually, i seen male with red ventral. So usually is that i slightly frightened the suspected female to look for the black marking at the base of the ventral. Successful getting 2 pairs befor they died. One pair spawned but no fries.

[valice]

A female right? Just got it today at C328...



A male? From the same tank...

[joopsg]

valice. First pic is a female. but the 2nd pic also looks like a female to me..

[valice]

At first I thought that the 2nd pic was a female too... But this picture is not showing its ventral pic well...

Let me try to get another pic of it later...

[joopsg]

how big is the suspected male?? cos they reach some stage, the male will not have a lyretail..

[valice]

It is about 1 inch in size...