phoeni­cu­rus

Parosphromenus phoenicurus (Fundort Sungai Kampar near Langgam) Copyright Helene Schoubye

Schindler & Linke 2012

First descrip­tion: Ingo Schindler/​Horst Linke,Two new species of the genus Parosphromenus (Teleostei: Osphrone­mi­dae) from Suma­tra. Ver­te­brate Zool­ogy 62(3), 2012, p. 399406.

Char­ac­ter­is­tics: Licorice gouramy of the bintan-​harveyi-​type with slightly devi­at­ing cau­dal. The cau­dal is the most strik­ing dif­fer­ence to P. tweed­iei. Total length max. 29.0 cm (wild caught spec­i­men), 4.0 cm (aquar­ium spec­i­men). Fin for­mula: dor­sal XI-​XIII, 67, total 1720, anal XI-​XIII, 811, total 2124. The orig­i­nal descrip­tion puts the coloura­tion like this: “Dor­sal and anal fin with black­ish band at fin base, fol­lowed by vivid red or crim­son band, nar­row iri­des­cent light bluish band (more turquoise ante­ri­orly), sub­dis­tal black band, and light blue mar­gin. Cau­dal fin with almost tri­an­gu­lar dark black patch, sur­rounded by vivid red or crim­son band, light bluish band, sub­dis­tal black band, and light blue mar­gin. Pelvid fin iri­des­cent bluish-​turquoise, fil­a­ment black. Pec­toral fin hya­line.” (Schindler/​Linke).

Whereas the wild caught spec­i­men exhib­ited marked colour dif­fer­ences to the most sim­i­lar of the other species, P. tweed­iei, by show­ing less red parts, small whitish-​bluish bands sep­a­rat­ing the red parts in the dor­sal and cau­dal from the black­ish bands and a marked rhom­bic form of the cau­dal, the aquar­ium off­spring soon became more sim­i­lar to tweed­iei, lost par­tially the whitish-​bluish sep­a­rat­ing bands men­tioned, devel­oped much more red in all fins and in some indi­vid­u­als a less rhom­bic cau­dal (com­pare pho­tos of the wild caught form by Linke and pho­tos of the aquar­ium bred off­spring by Fis­cher: they look like belong­ing to dif­fer­ent species). The Females are again very sim­i­lar to other females of that type.

Sim­i­lar species: P. tweed­iei.A nearly con­stant dif­fer­ence is the rhom­bic from of the cau­dal (as opposed to a rounded cau­dal) and the nearly tri­an­gu­lar form of its inner black spot. As men­tioned, the rhom­bic form tends to get less marked in aquar­ium bred fish. Even the black spot is less marked in many males which show much more red.

In P. tweed­iei we have known very marked colour devi­a­tions. At some places and times the attrac­tive red is nearly miss­ing and sub­sti­tuted by bluish or green­ish colours. We know noth­ing sim­i­lar with P. phoeni­cu­rus, but this species is known from one sin­gle place only.

Ocurrence/​Distribution:The only known place of ori­gin is a black­wa­ter swamp area near to Kota Ker­in­cikiri, Suma­tra Riau, at Langgam. This is part of a “Sun­gai Kam­par river drainage at Langgam (about 40 km south-​east of Pekan­baru), provice of Riau in the cen­tre of Suma­tra, Indone­sia.” (Schindler/​Linke).

Water para­me­ters mea­sured by Linke 2008: 26.8 degrees Cel­sius, a pH value of 5.25, and an elec­tri­cal con­duc­tiv­ity of 7 Microsiemens/​cm

Threat: Extremely high since the species is known from that sin­gle ter­ri­tory only. So far, it has only been imported once pri­vately by its dis­cov­erer. The first ani­mals could be prop­a­gated com­par­a­tively easy, and soon there were good aquar­ium stocks. Mean­while the prop­a­ga­tion has become more dif­fi­cult, but there are nev­er­the­less sev­eral small breed­ing stocks.

Discovery/​first import: 2008 Horst Linke dis­cov­ered sev­eral puta­tive new species of Parosphromenus from Suma­tra and near islands. Among them was this new species and P. gunawani. From 2008 to 2012 P. phoeni­cu­rus was called spec. Langgam.- It is very likely that the species has never been imported by aquar­ists or ichthy­ol­o­gists before and hitherto.

Trade: In Sum­mer 2014 a com­mer­cial Import was announced by Aquar­ium Diet­zen­bach, Ger­many of about 500 ani­mals, (Local­ity Sun­gai Kam­par near Langgam, Sumatra).

Care/​Breeding: The species does not devi­ate in its require­ments from other cogen­ers. The very low con­duc­tiv­ity in its home habi­tat indi­cates that one should obey this fea­ture in the aquar­ium, too.

Behaviour/​Particularities: P. phoeni­cu­rus is one of our most attrac­tive species of licorice gouramies. In this respect it is to be rated at the same level as P. tweed­iei. Given its very lim­ited dis­tri­b­u­tion (as far as we know) we should at any rate try to secure our aquar­ium stock. Head down courtship. Sim­i­lar behav­iour to other related species.

Lit­er­a­ture:

Weblinks:

P. phoenicurus male (Aquarium Dietzenbach) Copyright Helene SchoubyeP. phoenicurus. Male, caught at the original place 'Langgam' by H. Linke. Copyright Horst LinkeP. phoenicurus. Offspring of wild caught fish, bred in the aquarium by M. Fischer. Copyright Martin FischerP. phoenicurus female. Copyright Martin FischerP. phoenicurus male Copyright Martin FischerP. phoenicurus male Copyright Martin FischerP. phoenicurus Copyright Martin FischerP. phoenicurus male Copyright Martin FischerP. phoenicurus males Copyright Martin FischerP. phoenicurus Copyright Martin FischerP. phoenicurus Copyright Martin FischerP. phoenicurus males Copyright Martin FischerP. phoenicurus flashing males Copyright Martin FischerP. phoenicurus males Copyright Martin FischerP. phoenicurus Copyright Martin FischerP. phoenicurus Copyright Martin FischerP. phoenicurus Copyright Martin FischerP. phoenicurus Copyright Martin FischerP. phoenicurus male Copyright Martin FischerP. phoenicurus Copyright Martin FischerP. phoenicurus Copyright Martin Fischer


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