Sven O Kullander


Apistogramma eremnopyge Ready & Kullander


Apistogramma eremnopyge Ready & Kullander, 2004: 2, fig. 1 (Peru, Province Loreto: Río Itaya drainage, Río Pintuyacu, 48 km on road from Iquitos to Nauta).

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Apistogramma eremnopyge, MUSM 21214, holotype, adult female, 28.2 mm SL, from Río Pintuyacu, just south of Iquitos, Peru. Photo © S.O. Kullander.


Apistogramma eremnopyge is a relatively slender-bodied species with pronounced sexual dichromatism. Only one male 34.4 mm, and four females (largest 28.2 mm SL) were measured. It is the only Apistogramma species with a prominent dark blotch on the lower caudal peduncle, present in both males and females. Apistogramma eremnopyge is similar to A. bitaeniata in overall shape and color pattern, reduced cephalic lateralis pores (3 postlachrymal infraorbital pores; four dentary pores), and sexual dimorphism in fin development. Males with produced anterior dorsal fin lappets and produced rays dorsally and ventrally in the caudal fin. Lateral spot absent, caudal spot distinct. Lateral band narrow, at most only one scale row in height. Living male with light brown dorsum, an iridescent broad band along middle of flank, ventral flanks whitish; scale margins blackish on flanks. Lateral band and caudal peduncle blotch blackish. Gill cover and cheek with iridescent blue spots and lines alternating with red spots and lines. Base of dorsal fin maroon; produced dorsal fin lappets orange; rest of dorsal fin bluish. Counts: D. XVI.7, A. III.6-7; E1 row scales 22-23; cheek scale rows 1-2; gill rakers 1 (Ready & Kullander, 2004).

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Apistogramma eremnopyge, adult male, paratype, NRM 49446, 34.4 mm SL. Photo © S.O. Kullander.

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Apistogramma eremnopyge, adult living male, not preserved. Photo © O. Lucanus.


MUSM 21214, adult female, 28.2 mm SL; Peru, Province Loreto: Río Itaya drainage, Río Pintuyacu, 48 km on road from Iquitos to Nauta. July 2002. O. Lucanus.


eremnos, Greek, meaning black, swarthy, or dark, and pyge, Greek, meaning rump or buttocks. The species is named with reference to the identifying mark of a dark blotch on the lower caudal peduncle. A noun in apposition.

Geographical distribution

Only recorded from the Río Pintuyacu, a tributary of the Río Itaya, close to Iquitos, in the Peruvian Amazon basin.
Lifemapper map

Natural history

To be added.

Local name

None recorded.


READY, J.S. and S.O. KULLANDER. 2004. Apistogramma eremnopyge, a new species of cichlid fish (Teleostei: Cichlidae) from Peru. Zootaxa, 564: 1-10. PDF