No Martin, I am sorry, but this is definitely not filamentosus. It might be a form of rubrimontis or opallios, but the colours are not yet clearly to be seen. It may even be the most normal spec. Sentang or a similar variant from Sumatra. It’s definitely a male. Do you have females too?
The male filamentosus have a distinct caudal (see our species account) and are not to be mistaken. This is to be seen with half-grown specimen already.
At any rate: keep the new fish in both sexes together and don’t mix it up with other bintan-like fish. They might easily hybridize, and then nobody can say them apart again.
If you are seriously interested in other species and if you could travel in the next months to the west border for a short visit in Germany (say in Riesa or Weisswasser or Horka) I could arrange that a certain amount of pairs of different species could be shipped to friends of the project over there and you could fetch them.
And perhaps a still better idea: I shall visit Poland for an ornithological excursion in May. I shall go by train to Warsaw, but there is very limited time. I could take some Parosphromenus for you with me if you could fetch them on the spot so that we do not have to wait (it’s a group!). Please write to my personal mail address (I think you have it).
The
PAROSPHROMENUS PROJECT
