Sanches' Cory

Geographic Origin and Biotope: Originating from Suriname, in the Saramacca river basin. Inhabits the shade of clear streams ("creeks") covered by the forest canopy, in which currents slowly lap sandy mounds enriched by abundant organic debris and foliage.

Taxonomy and Morphology: Dwarf Callichthyidae. Of minute build, rarely reaches 4 cm (1.6 inches). Morphologically it is placed in the group of short-snouted Corydoras, characterized by an extremely stocky and aerodynamic silhouette.

Social Behavior: Laborious bottom sheep. Dramatically suffers and dies of consumption if kept solitary or in pairs. Demands a considerable number of members in the school (ideal from 8-10 up) to show the hyperactivity and the incessant rooting that distinguishes it.

Coloration and Sexual Dimorphism: Beige-bronze base color with silvery reflections. Absence of obvious "saddles": a subtle black reticulation decorates the back and head, fused into timid mottling. Females stand out for the visibly rounded body diameter compared to the linearity of the males.

Aquarium Setup: Obligatory biotope setup: single bottom in fine dark inert sand to enhance metallic reflections and protect its mouth. Bog woods interwoven with Anubias, and extremely soft lights to reassure the school.

Diet and Feeding: Voracious digging micro-predator. The grain size of the meal is essential: very fine baits and crushed tablets are combined with massive tri-weekly integrations of live food such as daphnia, cyclops, and thawed or live brine shrimp.

Water Quality: Demands typical temperate forest conditions: Temperature 22-26°C (72-79°F), stable pH between neutral and weakly acidic (6.0 - 7.2), combined with low or moderate GH (2-12). Lethally suffers high organic loads of ammonia: precise but delicate siphonings are required.

Compatibility and Tankmates: Due to its fragility, it must be flanked exclusively by Lilliputian fish: Ember Tetras, Boraras, and tiny Loricariids. Large Cichlids or burrowing fish would destroy it at a sensory level, leading to malnutrition.

Aquarium Reproduction: Teased by cold thermal "monsoon changes", it launches into tight T-shaped matings. The small but resistant, highly adhesive eggs are sealed individually to the glass or foliage. Isolation of the breeders necessary against cannibalism.

Risks and Diseases: In contact with coarse or rough gravel, the precious barbels go into fulminant systemic bacterial necrosis. Chronic and inexorable sensitivity to treatments and baths with unreduced dosages of Malachite green or Copper.