All fish / Callichthyidae

Ehrhardt's corydoras

Corydoras ehrhardti

Also known as ehrhardt's cory, ehrhardti cory, ehrhardt's catfish, corydoras erhardti, cory ehrhardti, コリドラス・エールハルディ, 埃氏鼠鱼

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A small armoured catfish with a pale greyish body covered in dark spots and blotches, usually with a darker patch under the dorsal fin. It comes from cooler subtropical streams, so it suits unheated or gently heated community tanks, and it is valued for its busy, sociable foraging on the bottom.

Care at a glance

Care level

Easy

Temperament

Peaceful

Adult size

5 cm

Temperature

18 to 24 °C

pH

6 to 7.5

Smallest tank

60 litres

Keep as

Group of 6 or more

Diet

Omnivore: sinking pellets and wafers, bloodworm, daphnia, brine shrimp

Swims

Bottom of the tank

Lifespan

5 to 10 years

Water

Freshwater

Wild range

Southern Brazil (coastal drainages of Santa Catarina and Paraná, including the Itajaí basin)

Breeding

It breeds in the typical corydoras T-position, with the female sticking eggs onto glass and plants, often after a cool water change. Spawning is fairly easy in captivity, and the eggs and fry can be raised in a separate tank on microworms and baby brine shrimp.

Good to know

Prefers cooler water than most tropical corydoras, so avoid long-term keeping above about 25°C. Keep it over sand or smooth gravel to protect its barbels, and it is easily confused with similar spotted species such as C. paleatus relatives.