Although only described in 2006 this species has been known in the hobby since at least 1988 when it was imported to Germany and traded as G. sp. 'Parnaíba'. An undescribed species from the rio Pindaré in Maranhão state usually sold as G. sp. 'Pindaré' is sometimes labelled G. sp. 'Pindaré' (Parnaíba) which has resulted in some confusion but the two do not occur sympatrically and are totally distinct from one another.

This species is relatively rare in the hobby but sometimes available from specialist retailers or private breeders. Though described in 1992 it was first collected much earlier and has been in the hobby since the late 1970s, being known as ‘Wangenstrich-Erdfresser’ (cheek-stripe eartheater) in Germany.

It’s one of just five Geophagus species not to be included in the nominal G. surinamensis ‘group’ of closely-related species within the genus along with G. argyrostictus, G. gottwaldi, G. grammepareius and G. harreri.

This species is also known as the 'pearlscale' or 'mother-of-pearl' cichlid in deference to the iridescent body scaling. It's also worth noting that fishes sold as Gymnogeophagus australis in Europe are ‘G.‘ brasiliens is more often than not.

Wild specimens exhibits significant dissimilarities in body colour and patterning depending on locality with basic colouration being dominated by varying shades of blue, green or yellow, for example. Some populations al…

The fish in our images above were imported together don’t correspond to any of the described species of Pangio though they can be assigned to the P. kuhlii species group with a degree of certainty. Unfortunately the live appearance of P. kuhlii itself is a mystery to aquarists since it’s currently considered endemic to Java and may have never been seen in the hobby.

It appears that I. hugowolfeldi, I. longicorpus and I. yongdokensis form a biogeographic lineage distinct from I. koreensis and I. pumila, with the former group distributed to the south of the Taebaek and Noryeong moutnain ranges and the latter to the west. This is further evidenced by the fact that the lamina circularis in males of the southern gro…

Among them it’s most similar to I. longicorpus and I. hugowolfeldi but can be distinguished by the following combination of characters: body patterning consisting of 9-13 dark vertical bars along the flanks plus a small dark spot at the base of the upper caudal-fin lobe; no black blotch or markings posterior to the operculum; reduced lamina circularis in males; interorbital width measures 14.7-17.8% o…

In a study conducted on the Arataye River, the main tributary of the Approuage, this species was mostly collected from stretches of rapids with rocky substrate which were reduced to a series of pools during the dry season. Other fishes observed at the same site were Auchenipterus nuchalis, Hypostomus gymnorhynchus and Moenkhausia cf. intermedia while at other localities in the river Bryconops affinis, Myleus ternetzi, M. rhomboidalis, Moenkhausia aff. barbouri, Curimata sp. and Serrasalmus sp. were collected.

This species is relatively rare in the hobby but sometimes available from specialist retailers or private breeders. Though described in 1991 it was first collected much earlier and misidentified by Gosse (1976) as G. surinamensis.

It’s one of just five Geophagus species not to be included in the nominal G. surinamensis ‘group’ of closely-related species within the genus along with G. gottwaldi, G. grammepareius, G. harreri an…

This species is very rarely-traded since collections of fishes for commercial purposes aren’t common in Suriname. It’s a member of the nominal G. surinamensis ‘group’ of closely-related species within the genus and can be identified by a combination of characters including: no dark preopercular marking; six vertical/parallel bars on each flank (normally visible only when the fish are stressed, spawning or preserved); dark, squarish lateral spot positioned within the third vertical bar; sixth (posterior) bar elongate an…

All Iksookimia species are endemic to Korea, and I. pumila is known only from the Baek River drainage in south-western Korea where its presence has been undermined at some localities due to construction of a dam in the middle reaches of the river during the late 1990s. Type locality is ‘Paikchon stream at Sangso-myon, Puan-gun, Chollabuk-do, South Korea’.

The reservoir formed by the dam has also be…