Salt and pepper cory

Quick facts

Adult size

3 cm

Lifespan

can live up to 5 years

Tank zone

bottom

Temperament

peaceful

Difficulty

beginner

Schooling

recommended 8+ (critical minimum 6, thrives at 12+)

Typically wild-caught

yes - acclimate slowly

Water parameters

Temperature

22–26°C

pH

6.0 to 7.5

Hardness

2 to 15 dGH

Tank requirements

Minimum volume

40 L

Minimum length

45 cm

Flow

low

Lighting

moderate

Substrate

sand

Hiding spots

needed

Open swimming room

needed

Feeding

Diet: omnivore, feeds primarily at the bottom.

Tiny mouths need tiny food. Micro pellets, crushed flake, frozen baby brine shrimp, frozen cyclops, frozen daphnia, and live microworms. They feed both in the midwater column and on the substrate surface. In community tanks, they're easily outcompeted. Target-feed with a pipette or drop food in their corner. Two to three feedings daily in small amounts.

Compatibility

• Tiny cory (2–3 cm) that shares the midwater-hovering behavior of the pygmy cory (C. pygmaeus) rather than the strict bottom-dwelling of larger Corydoras species. Part of the dwarf cory trio alongside C. pygmaeus and C. habrosus.
• Safe with any fish that won't eat them. Nano fish, shrimp, snails, and otocinclus are ideal companions. Larger community fish that share the bottom zone may intimidate them.
• Groups of 8+ for natural schooling behavior. They hover in the midwater column in a loose group, occasionally darting to the substrate to forage. Smaller groups are timid and hide.
• Excellent shrimp tank inhabitants. Ignore adult shrimp and shrimplets; add activity without any predation risk.

Habitat

Native to coastal drainages in Venezuela and Trinidad. Found in shallow, slow-moving streams over sandy and leaf-litter substrates. The species name (habrosus) means "graceful" in Latin. Adults reach only 2–3 cm, making this one of the smallest catfish available in the hobby. The body is pale with irregular dark blotches and a bold dark stripe along the midline, giving the salt-and-pepper appearance. Unlike the pygmy cory (C. pygmaeus) which has a clean horizontal stripe, C. habrosus has a more chaotic, blotchy pattern. Both species hover in the midwater column, which distinguishes them from standard bottom-dwelling corys. Commercially bred and wild-caught specimens are both available. The species has been in the hobby since the 1960s but remains less popular than the pygmy cory, partly because the coloring is less immediately appealing.

Breeding

Breeds similarly to other small Corydoras. Cool water changes trigger spawning. Eggs are deposited individually on plant leaves, glass, and decor. Clutch sizes are small (10-30 eggs). Eggs hatch in 3-5 days. Fry are tiny and need infusoria or paramecium for the first week before transitioning to baby brine shrimp. In heavily planted tanks, fry can appear without deliberate breeding because the adults spawn continuously in small batches and some eggs survive predation. The species is less prolific than larger corys but breeding is achievable in a dedicated setup.

Common problems

Same vulnerabilities as other dwarf corys: sensitive to water quality swings, intolerant of high nitrate, and copper-sensitive. Treat all chemical medications at half dose. Ich is a risk during acclimation. Internal parasites in wild-caught fish cause wasting. The small body size provides no buffer against parameter instability, making regular water changes and parameter monitoring more important than with larger fish. Lifespan is 3-5 years; the colony needs to breed to sustain itself long-term.

Bioload

Bioload coefficient: 0.6 (3 cm micro cory; barely registers on bioload. keep a group of 8+ and they still produce less waste than one neon).

Bioload coefficients are calibrated against the neon tetra as the anchor (1.0). See the methodology page for the formula and how each value was derived.

Further reading

• How to cycle a fish tank
• Stocking ideas by tank size