Che Eartheater Care Guide
Gymnogeophagus che is an eartheater cichlid known only from a single Argentine stream, a sand-sifting species tolerant of cooler seasonal temperatures.
Compiled by Aquairi from published sources · Published · Updated
Overview
Gymnogeophagus che is a small eartheater cichlid from South America, recorded only from a single locality in Argentina. Like its relatives it is a substrate-sifting fish and tolerates the cooler seasonal temperatures characteristic of the genus.
Taxonomy
- Family: Cichlidae
- Subfamily: Geophaginae
- Genus: Gymnogeophagus
- Scientific name: Gymnogeophagus che
Habitat
According to FishBase the species is restricted to the Paraná River basin, in the Paraná drainage of Argentina, and is known only from the Arroyo Urugua-í. It is a freshwater, benthopelagic fish.
Tank requirements
- Minimum tank volume: 250 L (66 gal)
- Temperature: 17-26 °C (63-79 °F)
- pH: 6.5-7.8
- GH: 5-15 °dGH
- Substrate: sand for sifting
- Lifespan: 6-10 years
Diet
An omnivore. The genus name combines the Greek for naked, earth and to eat, reflecting the eartheater feeding habit of sifting substrate for food. In the aquarium a varied diet of granular and frozen foods supports this species.
Compatibility
A bottom-dwelling, semi-aggressive cichlid best housed with robust, similarly sized tankmates. As a sand-sifter it is not suited to delicate planted layouts, and very small fish or shrimp may be at risk.
Gymnogeophagus che Breeding Guide
Overview
Gymnogeophagus che (Casciotta, Gómez & Toresanni, 2000) is a small eartheater from the Paraná River basin in Argentina, known only from the Arroyo Urugua-í, and reaching about 11.6 cm standard length. FishBase lists its conservation status as Near Threatened (2021). Species-specific aquarium breeding information is not documented in the sources reviewed, so the notes below are given at genus level and flagged as such.
Conditioning
For Gymnogeophagus generally, conditioning relies on a varied diet within a stable, mature aquarium, but the central factor for reproductive readiness is replicating a seasonal cycle rather than diet alone.
Breeding Setup
- A cool overwintering period followed by warming is the genus-wide spawning cue, with cool seasonal temperatures characteristic of these subtropical fish.
- A fine sand bed suited to a sifting eartheater.
- Flat surfaces for spawning and refuges for a brooding fish, in line with genus behaviour.
- These are genus-level recommendations; no setup specific to G. che is documented.
Spawning Behavior & Trigger
Within Gymnogeophagus, two reproductive strategies occur: ancestral substrate-spawning with biparental care, and derived maternal mouthbrooding. The genus-wide trigger is the rise in temperature following a cool period. The record lists G. che as a mouthbrooder, which is consistent with the mouthbrooding strategy present in the genus, but no documented spawning account confirms the mode for G. che specifically.
Common Challenges
The principal limitation is the absence of species-specific breeding documentation for G. che, combined with its restricted range and Near Threatened status. As with the genus, providing a genuine seasonal cool period is essential to any attempt.