Condiscipulus Cory

Geographic Origin and Biotope: South American species, originating from the Oyapock basin (river that marks the border between French Guiana and Brazil). Inhabits small marginal coastal rivers with flowing waters, clear sandy bottoms, and areas shaded by riparian forests.

Taxonomy and Morphology: Member of the Callichthyidae family. Medium-sized Corydoras (up to 5 - 5.5 cm / 2-2.2 inches). It is distinguished by a markedly elongated snout compared to "traditional" Corydoras, an adaptation for probing and digging deep into thick sand beds.

Social Behavior: Obligate gregariousness. Given its "long-snouted" morphology, it may be slightly more timid than short-snouted Corydoras and tends not to spontaneously mix with other Corydoras species unless closely related. Keep in mono-specific groups of 6-8 individuals.

Coloration and Sexual Dimorphism: The base body is light/pale silver. The dorsal fin bears a distinct black spot that does not extend onto the back. Features stippling or vermiculation on the elongated snout. Females are structurally more massive, males visibly slimmer and more hydrodynamic.

Aquarium Setup: Vital requirement: very fine sand (siliceous, edgeless). A gravel substrate will prevent them from exhibiting the natural behavior of "plunging" their snout to find food. Provide good water flow and intertwined driftwood or dead leaves (Ketapang) to create hiding places.

Diet and Feeding: Carnivorous/Omnivorous micro-predator. Prefers live or frozen foods that sink and hide in the top layer of sand (e.g., Tubifex, bloodworms, White worms). Accepts quality commercial tabs, which must be offered in the evening in the dark.

Water Quality: Sensitive to oxygen deficiency and accumulated nitrogenous pollutants. Moving to very moving water; temperature 22-26°C (72-79°F). Soft or medium-hard water (GH 2-12) and slightly acidic or neutral pH (6.0 - 7.2). Regular superficial siphoning is important.

Compatibility and Tankmates: Peaceful, does not harm any other fish. Excellent companion in community tanks with schooling fish that swim in the upper half of the tank (Nannostomus, Carnegiella, Danios, Rasboras). Unrecommended paired with voracious Loaches that would steal its food.

Aquarium Reproduction: Reproductive model identical to Amazonian species. Stimulated by a dense live diet followed by large, sudden cool water changes. Glues dozens of clear adhesive eggs to the glass near the filter flow. It is necessary to remove the parents to prevent predation of the offspring.

Risks and Diseases: Infections and necrosis of the long and delicate barbels are lethal if housed on the wrong substrate. Less tolerant than an aeneus to medications (especially Malachite Green and Copper) and intolerant to salt treatments or acute ammonia spikes.