alfredi

Parosphromenus alfredi (Foto:Dr.J.Schmidt)

Kot­te­lat & Ng 2005

First descrip­tion: The Raf­fles Bul­letin of Zool­ogy 2005 Sup­ple­ment No.13: 102 f.

Char­ac­ter­is­tics: Dor­sal struc­ture: XII-​XIV, 56, total 1819, anal fin: XI-​XIII, 810, total 2022. ♂ in breed­ing colour­with blue and turquoise rib­bons and large black areas in the unpaired fins, addi­tion­ally with mostly nar­row red seams; pelvic fins whitish to blue with medium long fil­a­ments. ♀ dis­tinc­tion from other types of har­veyi group dif­fi­cult to impos­si­ble. ♀ courtship colour­ing pale beige to yel­low­ish. While the basic colour pat­tern is rel­a­tively con­stant, in detail there are still sig­nif­i­cantly different-​colored vari­eties, which might have orig­i­nally belonged to sep­a­rate populations.

Sim­i­lar species:high, espe­cially with partly mixed blue/​red finned species with round cau­dal fin like rub­ri­mon­tis, tweed­iei, opal­lios. There are con­jec­tures that the close prox­im­ity of its area of occur­rence to tweediei´s has pos­si­bly led to nat­ural hybrids. But since the two species occur on the oppo­site sides of the Sin­ga­pore strait this is not very likely with­out human interference.

Occur­rence /​Dis­tri­b­u­tion: West­ern Malaysia, Johore, area of Kota Tinggi, Mawai and Desaru. Orig­i­nally occur­ing in peat for­est swamps, but today it only exists in its rem­nants. The species can partly still be found there in streams and brooks or in road­side canals altered by development..

Threat: very high. Large parts of the orig­i­nal range are no longer hab­it­able for the species. Even the for­mer aquar­ium stocks are almost extinct so the remain­ing fish deserve renewed atten­tion and breed­ing efforts.

Discovery/​First import:it is likely that the species has been found occa­sion­ally since the fifties. Ng et al. col­lected the holo– and paratypes since 1992. The first descrip­tion was made in 2005, cer­tainly con­sid­er­ably later than the first appear­ances of the species in trade.

Trade: the attrac­tive species has obvi­ously been traded repeat­edly mainly in the nineties, some­times in dif­fer­ent vari­eties (see e.g. spec. aff. alfredi “Mim­bon 98) and was bred and dis­trib­uted in con­sid­er­able num­bers by Hall­mann (D). Since then is has occurred sig­nif­i­cantly less fre­quent in trade, prob­a­bly because of the shrink­ing nat­ural habitats.

Care /​Breed­ing: type local­ity with black water of pH 4.5 to 5.0. Stan­dard breed­ing con­di­tions for Paros. After sev­eral gen­er­a­tions, fer­til­ity prob­lems and dwarf growth occurred. The unclear sit­u­a­tion of the appar­ently more or less dif­fer­ent local vari­eties and the tem­po­rary trade with blue and red-​finned licorice gouramis has most likely led to mix­ing dif­fer­ent vari­eties even in the aquar­ium stock.

Behav­iour /​Par­tic­u­lar­i­ties: typ­i­cal licorice gourami of the harveyi-​group. Head-​down courtship. Very attrac­tive, colour­ful species.

Lit­er­a­ture:

Weblinks: Paros alfredi and its destruc­ted habitat

(PF and DA)

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