Max Size: 9cm

Emerald Brochis Corydoras (Corydoras splendens)

The Emerald Brochis Corydoras is a prevalent species due to its peaceful disposition and metallic green colouration. This Cory is an energetic, distinctively marked fish perfect for a community or a well-planted aquarium.

It would be best if you kept Emerald Brochis Corys in groups of at least six individuals as they will be much more active and confident with their kind as they are shoaling species in nature. Ideal tankmates for these Corys could include small to medium Tetras, Danios, Rasboras and Livebearers, as well as Gouramis, Dwarf Cichlids, Loaches and other peaceful Catfish. However, it would be best if you didn't house them with anything aggressive or huge.

If you intend to breed these Corys, you should keep them in a species only aquarium to avoid other greedy fish consuming any of their eggs.

The Emerald Brochis Corydoras will thrive in an aquarium that mimics their natural environment. To achieve this, you could use a sandy substrate and add some driftwood; standard beech is also ok to use if you thoroughly dry it and strip it of its bark. Having dim lighting will also benefit your fish.

Adding some dried leaves to stain the water would complete the natural feel; however, make sure you replace them every few weeks so they do not rot and pollute the water. Adding some aquarium-safe peat to the filter can aid in simulating black water conditions. Although you will not find aquatic plants in this Cory's natural waters, they also enjoy a well-planted aquarium.

The Emerald Brochis Corydoras is sensitive to deteriorating water conditions; therefore, a good maintenance schedule is essential. Like all Corys, this species may lose their barbels if you keep them in poor water, so make sure you keep the substrate clean and perform regular significant water changes.

The Emerald Brochis Corydoras has a body that reflects a metallic green, bluish-green, or even a bluish colour depending upon the lighting angle. The ventral area is yellowish, as are the ventral, pectoral and anal fins, and the caudal, adipose and dorsal fins are translucent brownish.

Quick Facts
Scientific NameCorydoras splendens
Year Described1855
Other NamesEmerald Green Cory, Emerald Catfish, Emerald 'Brochis'
OriginsBrazil, Colombia, Ecuador, Peru
Aquarium LevelBottom
DifficultyBeginner - Intermediate
Best kept asGroups 5+
Lifespan10 - 12 years
Water Parameters
Water TypeFreshwater
PH5.0 - 8.0
GH2 - 15
TDS36 - 268
68 - 82℉
20 - 27.8℃


Emerald Brochis Corydoras
Emerald Brochis Corydoras

Natural Habitat

The Emerald Brochis Corydoras is endemic to the Rio Tocantins and the area around Iquitos in western Brazil, as well as in the Ucayali River, Rio Ampiyacu and the Marañón River in Peru in South America. You can also find these Corys in the Rio Napo in eastern Ecuador and southeastern Colombia. These Corys inhabit still bodies of muddy shallow water in streams, rivers and marginal lakes and their habitats have dense vegetation along the banks.


Emerald Brochis Corydoras are omnivores that feed on crustaceans, insect larvae, worms and plant matter in the wild. In the aquarium, these Corys are unfussy and will accept most things. However, it would be best to use a good quality dried product such as algae wafers or sinking pellets as the staple diet and supplement that with live, frozen or freeze-dried foods such as daphnia, bloodworm or brine shrimp.

Sexual Dimorphism

It is relatively straightforward to differentiate between the male and female Emerald Brochis Corydoras. The females are usually larger and fuller bodied than the males and have a pinkish belly. In contrast, males are slimmer, smaller and have yellow bellies.


The Emerald Brochis Corydoras can be somewhat challenging to breed; however, they produce similarly to other Corydoras species.

It would be best to set up a separate breeding tank with either a bare bottom, sand, or fine gravel substrate. You should also add an air-powered sponge filter and some clumps of java moss. It would also help if you had a higher ratio of males to females when breeding Corys; two males for every female is ideal. Finally, it would be better to condition the group on a mixed diet of dried, live and frozen foods as this will help to encourage spawning.

Once you can see the females are full of eggs, you should then perform a significant water change with cooler water and increase the flow and oxygenation in the tank, then repeat this daily until the fish spawn. When the fish are ready to spawn, you may notice an increase in activity; this will be the males pursuing the females.

When the females are prepared to spawn, they will allow the male to touch her with their barbels, where they will then take up the classic T-position. The female will then form a basket with her pelvic fins where she will place 1 to 4 eggs. Once the eggs are fertilised, she will swim away and find a suitable place to deposit the eggs, usually on the tank's glass near the water with a fast current. This cycle is then repeated until she has no more eggs.

Once spawning is complete, you should remove either the adults or the eggs; otherwise, the parents will consume them. If you decide to move the eggs, you will find they are pretty strong and can be easily rolled up the glass with a finger. The new tank should be oxygenated and have the same water parameters as the breeding tank.

It would be better to add a few drops of methylene blue to the water to prevent the eggs from getting fungus; however, some eggs may still have fungus, so you must remove them straight away to prevent it from spreading.

The eggs will usually hatch between 3 and 5 days later, and the fry will initially feed on their yolk sacs. Once they have finished their yolk sacs, you will need to provide them with microworms and baby brine shrimp. The babies appear to be less susceptible to disease if you keep them in a tank with a thin layer of sand rather than a bare bottom.

Other Corydoras of interest

Adolfos Catfish(Corydoras adolfoi)
Agassizs Corydoras(Corydoras agassizii)
Albino Corydoras(Corydoras aeneus)
Armatus Corydoras(Corydoras armatus)
Axelrods Corydoras(Corydoras axelrodi)
Banded Corydoras(Scleromystax barbatus)
View all Corydoras
Date Added: 26/07/2022 11:19:32 - Updated: 26/07/2022 12:45:15