Solox Corydoras

Geographic Origin and Biotope: Originating from the Oyapock River basin, on the border between Brazil and French Guiana. Inhabits slow, wide rivers flowing through primary forests, on sandy bottoms covered with fine mud and wood.

Taxonomy and Morphology: Solox Corydoras (Corydoras solox). Large and spectacular species belonging to the "very long-snouted" Corydoras lineage. Shares the banded pattern with C. amapaensis. Easily reaches 6.5 cm (2.5 inches).

Social Behavior: Despite its size and "trunk-like" snout, it is a shy and peaceful animal. It is highly gregarious: a group of 6-8 individuals will forage together by sinking their long noses almost entirely into the sand to unearth worms.

Coloration and Sexual Dimorphism: Grayish-cream base coloration, interrupted by a conspicuous and wide black band running from the anterior end of the dorsal fin to the caudal peduncle, plus a dark blindfold over the eyes. Females are corpulent.

Aquarium Setup: Large tank (minimum 100 cm / 40 inches). Fine sand mandatory to protect the very delicate long snout. Set up the bottom with bogwood roots, intricate Manzanita branches, and scattered Indian almond (Catappa) leaves.

Diet and Feeding: Extraordinary benthic hunter. Uses its snout to dig deeply: it is crucial to provide live/frozen bloodworms, tubifex, and blackworms, as well as high-quality protein pellets that sink rapidly.

Water Quality: Needs excellent substrate and water hygiene. Keep the water soft and acidic (pH 5.5-7.2) and avoid drastic spikes in pollutants. An oversized filter with moderate surface current is ideal.

Compatibility and Tankmates: Quiet and harmless. Excellent companion for fish from the Oyapock basin or similar: small Loricariids, non-aggressive Characins, and South American dwarf Cichlids. Frenetic bottom fish should be avoided.

Aquarium Reproduction: Difficult to breed in captivity. Follows the temperature drop protocol. Long-snouted parents are known to be avid devourers of their own eggs if they are not promptly removed from the spawning tank.

Risks and Diseases: Extremely susceptible to damage to the rostrum: sharp gravel is a death sentence. Wounds to the long snout become infected rapidly (Flexibacter) leading to tissue degeneration.