T.R. Gold Laser Corydoras

"Laser" strains in the cory trade describe a selectively bred metallic sheen — a reflective quality layered into the skin that causes the fish to catch light at angles that wild-type corys don't, almost like a moving mirror embedded in the body. The T.R. (tank-raised) designation means these are captive-bred specimens, not imports, which translates directly to faster acclimation, better disease resistance, and a fish that adjusts to captive water parameters without the stress load a wild-caught specimen carries from a months-long collection and shipping chain.

Corydoras are social, shoaling catfish from South American streams and river margins — Corydoras species number in the hundreds across the genus — and they do everything better in groups. A single cory is a fish that spends its time looking for company; a group of six or more is a coordinated bottom-cleaning crew that visibly schools and communicates through fin posture in a way that's genuinely interesting to watch. The gold laser grade pairs that social behavior with a color that reads as surprisingly vivid at substrate level where most golden-toned fish never venture.

Scientific name: Corydoras sp. (Gold Laser strain; T.R. = tank-raised)
Origin: Tank-raised; wild Corydoras from South American rivers across Colombia, Peru, Brazil, and Venezuela
Water parameters: Temp 72–79°F · pH 6.5–7.5 · GH 3–15 (prefer softer to moderately hard water)
Tank requirements: 20 gal minimum; fine sand or smooth gravel substrate to protect barbels; groups of 6+ recommended
Diet: Omnivore — sinking pellets and wafers as staple; supplement with frozen bloodworms, daphnia, and tubifex
Compatibility: Peaceful shoaling fish; excellent community tankmate; avoid cichlids or large fish that target bottom feeders
Husbandry note: Corydoras have delicate barbels sensitive to sharp substrate and high nitrates. Coarse gravel or dirty, high-nitrate water will erode barbels over time — fine sand substrate and regular water changes are the two most important husbandry factors for this genus.