Emerald green cory (emerald catfish)
The emerald green cory, long known as Brochis splendens and now placed in Corydoras, is a robust, deep-bodied catfish from the western Amazon of Peru, Ecuador and Brazil. It is larger and stockier than typical corys, reaching around eight centimetres, with a brilliant metallic green flank sheen and extra dorsal-fin rays. Because of its size and active foraging it needs more space and a longer footprint than smaller species, ideally a group of six or more in a well-oxygenated tank over soft sand. It is peaceful and sociable, mixing well with larger tetras, rasboras, gouramis and peaceful cichlids. Maintain 22-26 C, near-neutral pH and soft to moderately hard water. It is a hardy, undemanding omnivore that relishes sinking pellets, frozen bloodworm, Daphnia and vegetable matter. Occasionally it gulps air from the surface, which is normal.
Water parameters
| Temperature | 22 – 26 °C |
|---|---|
| pH | 6 – 7.5 |
| Carbonate hardness (KH) | 2 – 15 °dKH |
| General hardness (GH) | 2 – 18 °dGH |
Tank & stocking
| Minimum tank volume | 240 L |
|---|---|
| Volume budget per individual | 15 L — adds up with tank-mates |
| Minimum group size | 6 individuals (shoaling) |
“Minimum tank volume” is a reasonable floor, not an absolute limit. The per-individual budget is used by the Aqua app to estimate how heavily a tank is stocked.
Frequently asked questions
What size aquarium does Emerald green cory (emerald catfish) need?
Provide at least 240 litres for a small group to keep Emerald green cory (emerald catfish) in good conditions.
What water parameters does Emerald green cory (emerald catfish) need?
A temperature of 22–26 °C, pH 6–7.5.
Is Emerald green cory (emerald catfish) peaceful or aggressive?
Its temperament is peaceful.
What does Emerald green cory (emerald catfish) eat?
Its diet: omnivore.
How many Emerald green cory (emerald catfish) should be kept together?
It is a social species: keep a group of at least 6.
How big does Emerald green cory (emerald catfish) get?
Around 8 cm as an adult.
Is Emerald green cory (emerald catfish) suitable for beginners?
Care level: beginner.
Planning a tank with Emerald green cory (emerald catfish)?
AquaTender turns these parameters into live advice: it checks whether your tank is big enough, how heavily it's stocked, and whether your fish are compatible — then tracks water tests, photos and maintenance for you.
Fish from the same biotope
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