anjun­ga­nen­sis

P. anjunganensis (Foto: A. Vuorela)

Kot­te­lat 1991

First descrip­tion: Notes on the tax­on­omy and dis­tri­b­u­tion of some West­ern Indone­sian fresh­wa­ter fishes, with diag­noses of a new genus and six new species (Pisces: Cyprinidae, Belon­ti­idae, and Chaud­huri­idae). Ichthy­olog­i­cal Explo­ration of Fresh­wa­ters, 2 (1991): 273287

Char­ac­ter­is­tics: Over­all length max. 3.5 cm. Dor­sal struc­ture: XII-​XIII, 67, total 1820, Anal: XI-​XIV, 911, total 2123. ♂ in nup­tial plumage with plain brown-​red col­ored unpaired fins, thin white-​blue lined; pelvic fins have sim­i­lar col­or­ing with whitish to blue medium-​length fil­a­ments. ♀ dif­fer­en­ti­a­tion from other species with a round tail fin dif­fi­cult, usu­ally some­what more extended shape. Courtship col­or­ing of ♀ pale-​beige. The male pri­mary pat­tern is very con­sis­tent, how­ever, for forms with a blue area in the anal fin (see photo G. Kopic), it is unclear, whether they are attrib­ut­able to this species or not.

Sim­i­lar species: risk of con­fu­sion is low, because of the unusual anal fin col­oration of the males, con­fu­sion of the female with some other round-​finned species is possible.

Occur­rence /​Dis­tri­b­u­tion: Kali­man­tan Barat, Anjun­gan area, catch­ment area of the Kapuas River sys­tem, for exam­ple in the black water area of the Kepayang. The close prox­im­ity to the occurence of P. ornat­i­cauda is strik­ing. In some cases both species even live syn­topi­cally, but col­o­nize dif­fer­ent eco­log­i­cal niches.

Threat: High. In the area where this species occurs, wet­lands, espe­cially for­mer moist forests, have been drained and cleared. Many remain­ing waters have been affected by human activities.

Discovery/​First import:

Trade: The species appears occa­sion­ally in pet shops and because it is eas­i­lyrecog­nised, it is less threat­ened by con­fu­sion than oth­ers. It is not rare in trade; the expla­na­tion for this lies partly in the prox­im­ity of the most sought-​after species P. ornat­i­cauda.

Care /​Breed­ing: type local­ity with black water of pH 3.5 to 5.4. In 1990 H. Linke detected a con­duc­tiv­ity of 22 micro Siemens /​L and a rel­a­tively high tem­per­a­ture of 28.3 degrees C. Nests appeared to be built mainly in cave-​like struc­tures of the old leaves, lying in the water. Can be kept and bred well under stan­dard Parosphromenus con­di­tions. Medium-​sized clutches (up to 60 eggs).

Behav­iour /​Par­tic­u­lar­i­ties: usu­ally not com­pli­cated. Head-​down-​courtship. Dif­fer­ent, mostly less dict­inct foam nest. Used to tol­er­at­ing accom­pa­ny­ing fish such as P. R. pauciper­fo­rata osphromenoides from their native habi­tat, but these will pre­vent fry being raised in the same aquarium.

Lit­er­atur:

Weblinks: http://​www​.kolum​bus​.fi/​v​u​o​r​e​l​a​.​a​n​t​t​i​/​a​n​j​u​n​g​a​n​e​n​g​l​i​s​h​.​h​t​m

Parosphromenus anjunganensis Copyright VuorelaParosphromenus anjunganensis Copyright HallmannParosphromenus anjunganensis Copyright KlosterParosphromenus anjunganensis Copyright KlosterParosphromenus anjunganensis Copyright KlosterParosphromenus anjunganensis Copyright KlosterParosphromenus anjunganensis fry Copyright KoomansUnclear parosphromenus anjunganensis Copyright KopicParosphromenus anjunganensis biotop Copyright VuerelaParosphromenus anjunganensis Copyright GahlerParosphromenus anjunganensis Copyright C. Hinz


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