Longa

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.