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:

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