P. allani (Foto: H.Linke)

Brown 1987

First descrip­tion: Spe­cial announce­ment — two new ana­ban­toid species. Aquar­ist and Pond­keeper, June edition(1987), 34. (Actu­ally, only the anounce­ment of a first descrip­tion, which never fol­lowed. Thus it is valid as a first descrip­tion. Here was also the announce­ment of P. har­veyi, also valid as a first description).

Char­ac­ter­is­tics: total length max. 4.0 cm, strong physique. Dor­sal struc­ture: XI-​XIII, 56, total 1619, anal fin: XII-​XIII, 811, total 2122. ♂ in breed­ing plumage with multi-​colored unpaired fins, includ­ing broader red-​brown and nar­rower blue bands sep­a­rated by a black­ish nar­row band, a con­spic­u­ous dark spot in the cen­ter of the cau­dal fin, blue-​white fin edges with­out the wide iri­des­cent light bands of other species, but still with very col­or­ful effect; pelvic fins blueish with remark­ably short filaments.

The dif­fer­en­ti­a­tion of the ♀ from other species with rounded tail fin is dif­fi­cult, they have usu­ally a some­what more stretched body shape. Colour­ing of the ♀ is sim­i­lar but con­sid­er­ably fainter. Forms from the catch­ment area of Sun­gai Stung­gang are dif­fer­ently coloured (see below), as well as other forms with clearly vis­i­ble round spot on the dor­sal fin (see photo G. Kopic). The sta­tus of these forms is not yet clear.

Sim­i­lar species: low, because the fin colour­ing, which is in prin­ci­ple also seen in the females, can hardly be con­fused with other species.

Occur­rence /​Dis­tri­b­u­tion: North Bor­neo: Sarawak (Malaysia), e.g. sur­round­ings of Sibu (type local­ity), but the species was and is appar­ently quite com­mon in Sarawak. How­ever it is unclear whether the forms found in West Sarawak (river sys­tem Stung­gang; e.g. near Lundu), which look more or less phe­no­typ­i­cally dif­fer­ent, are still belong­ing to this species. Per­haps it is a sec­ond Sarawak-​species or at least a sub-​species (P. sp. Allani cf, also P. spec. Sun­gai Stung­gang or Lundu). It is unclear how other forms are to be judged; see fig­ure. G. Kopic. Brown and Brown 1987 dis­cuss this vari­abil­ity in the Sarawak Museum Jour­nal 37 (p.155170), Kot­te­lat & Ng 2005 cite it as yet unclear (p. 109).

Threat: very high, espe­cially given the rapid destruc­tion of nat­ural wet­land habi­tats and forests in West Sarawak. Remain­ing waters are often affected by human activ­i­ties. Occa­sion­ally P. allani can be found in still waters with pond-​like struc­ture butut it is unclear if the species can sur­vive in it continuously.

Discovery/​First import: Bar­bara and Allan brown 1986. The dis­cov­er­ers have reported about it in detail in Brown and Brown 1987.

Trade: to our knowl­edge this species is only known from few pri­vate imports. It seems as if it has not appeared in com­mer­cial trade to date.


Care /​Breed­ing: because of its rar­ity, this attrac­tive species is hardly known. G. Kopic, who was among the first breed­ers of this form, rec­om­mends soft to very soft water with pH value of 4.5 to 6. For breed­ing the pH value should be 4.2 to 5. Kopic says P. allani has been very dif­fi­cult to breed up to now.

Behav­iour /​Par­tic­u­lar­i­ties:Head-​down courtship.

Parosphromenus allani. Copyright Horst LinkeParosphromenus sp. Batan Kayan Copyright Michael LoP. spec. aff. allani Sungai Stunggang female Copyright C. HinzParosphromenus allani, location Sibu, Sarawak. Copyright Lawrence KentParosphromenus allani location Sibu. Copyright Lawrence KentP.spec.aff.allani Sungai Stunggang male. Copyright C. HinzParosphromenus allani location Sibu, Sarawak. Copyright Lawrence Kent

Biotopes of parosphromenus allani

Habitat of P. allani near Sibu Copyrtight C. HinzHabitat of P. spec. aff. allani Sungai Stunggang Copyright C. HinzDestroyed Parosphromenus allani habitat Sedili Copyright Lawrence KentDestroyed Parosphromenus allani habitat Sedili Copyright Lawrence Kent
Destruction of parosphromenus allani habitat near Sibu, Sarawak Copyright Lawrence Kent

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