Gold Dust Eartheater Care Guide - Aquarium Setup, Diet & Breeding

The Gold Dust Eartheater is an attractive, robust South American cichlid with a deep, gently rounded body and a sloping head. Its base colour is usually silvery beige or olive, with gold flecking across the cheeks, flanks and fins. Mature fish can develop stronger red, orange or blue-green highlights, particularly when displaying or in breeding condition, while a dark lateral marking may be visible on the body.

This species has the characteristic downturned mouth and constantly busy nature associated with eartheaters. It sifts mouthfuls of sand, extracting small food items before passing the clean substrate through the gill openings. This natural behaviour gives the fish an engaging, active personality and helps explain its common name.

Gold Dust Eartheaters are social cichlids that usually form loose groups when young. Adults establish a hierarchy and may show territorial behaviour, especially when spawning, but they are generally less relentlessly aggressive than many similarly sized Central American cichlids. Their activity and size make them an impressive centrepiece for a suitably spacious South American aquarium.

In the wild, they inhabit warm, slow to moderately flowing waters associated with river channels, margins and quieter backwaters. These environments typically contain soft sediments, submerged wood, leaf litter and scattered stones, with the fish searching through the bottom for insect larvae, crustaceans and other small organisms.

Gold Dust Eartheaters are known from the upper Río Sinú region of Córdoba Department in northern Colombia, South America. The name Geophagus sp. 'Alto Sinu' is used for an aquarium-trade form that has not been formally described as a separate species.

A group should have at least 300 litres, with 400 litres or more preferable for fully grown fish and a community. Aim for a footprint of approximately 120 cm by 45 cm or larger, since floor space is more important than height. Use deep, smooth sand or another fine substrate that cannot damage the mouth and gill covers as the fish sift it. Arrange rounded stones, driftwood and sturdy plants around open sandy areas, leaving clear territories and swimming space. Plants should be well rooted or attached to wood and rocks, as persistent digging may uproot delicate specimens.

Up to about 20 cm (8 in) in total length. Males typically grow larger and heavier-bodied than females, with more extended fins and stronger colouration.

Gold Dust Eartheaters are omnivorous micro-predators that naturally find insect larvae, small crustaceans, worms, seeds and other edible particles while sifting sand. Offer a varied diet of high-quality sinking cichlid pellets, granules, frozen or live brine shrimp, bloodworm, daphnia and other small meaty foods. Occasional vegetable ingredients and spirulina-based foods are useful, while large floating pellets and foods that encourage surface feeding are less suitable for their natural feeding style.

Gold Dust Eartheaters can live with other peaceful, robust South American fish that appreciate warm, soft to neutral water. Suitable companions include peaceful larger tetras, pencilfish, peaceful barbs, medium-sized loricariid catfish and Corydoras species that are large enough not to be swallowed. They may also work with other calm Geophagus or similarly sized cichlids in a large aquarium. Avoid tiny fish, fin-nippers and highly aggressive cichlids, and do not mix them with bottom-dwellers that cannot tolerate competition or territorial behaviour around the substrate.

Gold Dust Eartheaters are generally bred as substrate-spawning cichlids, although breeding behaviour can vary between collected forms sold under this name. A compatible pair cleans a flat rock or another firm surface before spawning, then both parents guard the eggs and defend the young. Once free-swimming, the fry can be offered newly hatched brine shrimp and other suitably small foods. Provide excellent water quality, gentle filtration and plenty of space around the spawning site, as the parents may become highly defensive.

Males are usually larger, more strongly coloured and develop longer dorsal and anal fin extensions as they mature. Females are generally shorter-bodied and less intensely marked, although reliable sexing can be difficult before the fish reach maturity.