Pygmy Corydoras

• ExerciseModerate

  An active swimmer that appreciates open swimming space.

• GroomingRoutine tank care

  Weekly partial water changes keep them in top shape.

• Living spaceNano-tank friendly

  Happy in a small, stable, well-filtered tank.

• Owner experienceSome experience helps

  A little know-how makes life smoother.

• Commitment3–5 years

  Plan for a long, loving relationship.

Health to watch: Ich (white spot) · Fin rot · Parasites

The Pygmy Corydoras (Corydoras pygmaeus) comes from the Madeira river basin in Brazil and is one of the smallest catfish kept, reaching about 2 to 3 cm. Unlike its larger relatives it spends much of the day hovering in mid-water in a loose shoal, resting on leaves and wood as often as on the substrate, which makes it look and behave more like a tiny tetra than a bottom fish. It needs numbers to feel secure: ten or more in a 45 litre tank or larger, at 22-26C, pH 6.0 to 7.5, over sand with plants and leaf litter. Feed very small foods, crushed sinking wafers, microworms, baby brine shrimp and finely ground flake, since its mouth cannot handle normal wafers. Its size is also its main constraint, because almost any medium fish will eat it, including angelfish and adult gouramis. Keep it in a nano or small community with chili rasboras, ember tetras and shrimp, and avoid strong filter intakes, which can trap fish this small without a sponge guard.

• How active is a Pygmy Corydoras?

  Moderate. An active swimmer that appreciates open swimming space.

• How much maintenance does a Pygmy Corydoras need?

  Routine tank care. Weekly partial water changes keep them in top shape.

• What tank size does a Pygmy Corydoras need?

  Nano-tank friendly. Happy in a small, stable, well-filtered tank.

• Is a Pygmy Corydoras a good fit for first-time owners?

  Some experience helps. A little know-how makes life smoother.

• How long do Pygmy Corydoras live?

  3–5 years. Plan for a long, loving relationship.

• What health issues affect the Pygmy Corydoras?

  Keep an eye out for Ich (white spot), Fin rot, Parasites. These are worth raising with your vet, along with any screening they recommend.

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