半锋兵鲶 · Peru Black Cory

Overview

The long-snouted Corydoras semiaquilus appears in several color forms in the aquarium trade. It is generally peaceful toward appropriate community fishes, but males can compete with one another. Social housing therefore needs enough space to accommodate occasional disputes.

Distribution & habitat

It is reported from the western Amazon in Peru and Brazil, using small tributaries, creeks, pools, sand banks, and flooded forest.

Aquarium setup

Sand, branching wood, roots, and dried leaves create a sheltered aquarium under dim light. Replace deteriorating leaves before decay harms water quality. Planted layouts also work even though aquatic plants are not characteristic of its natural waters. Avoid undergravel filtration and keep the substrate clean; neglected conditions can cause barbel problems.

Diet & feeding

Use sinking pellets or tablets as the foundation of an omnivorous menu, supplemented with water fleas, brine shrimp, bloodworms, and other suitable live or frozen foods. Give the group its own ration instead of relying on accidental leftovers.

Behaviour & compatibility

Keep at least six together with small, peaceful companions. Suitable community fishes may include gentle characins, cyprinids, labyrinth fishes, smaller cichlids, and other mild catfishes. Avoid very large or aggressive partners. Male disputes usually cause little damage when space is sufficient, but persistent pursuit still warrants attention.

Sexual dimorphism

Females are generally slightly larger and show a rounder outline from above. Breeding males develop small bristles along the leading pectoral spines.

Breeding

Methods used for other corys are possible trials, not a confirmed species-specific protocol. Condition a male-biased group in a separate aquarium with soft water, spawning cover, and air-powered filtration. Cooler replacement water and greater aeration may stimulate ripe fish.

If T-shaped pairing and adhesive egg laying occur, separate the eggs from adults. Incubation water should match the original aquarium, and fungused eggs should be removed. Hatching within several days and feeding tiny live foods after yolk absorption are general cory expectations to verify here. Maturity, season, and timing of water changes can affect the outcome.

Notes

Some names attached to color forms are informal trade labels rather than valid species names. Occasional surface gulps are normal, while a sudden increase calls for checking conditions. Pectoral spines may snag in a net or injure the handler.