The Green Severum Cichlid (Heros severus) is a stunning freshwater fish known for its vibrant greenish-gold coloration and peaceful temperament compared to other cichlids. Native to the slow-moving waters of the Amazon Basin, this hardy species makes a great addition to large community aquariums with compatible tank mates.
 
Tank Setup for Green Severum Cichlids
A tank of at least 200 liters is recommended for a single Green Severum, with larger tanks required for multiple fish. They thrive in environments with driftwood, rocks, and live plants, though they may occasionally nibble on softer vegetation. A soft, sandy substrate is best, as these fish enjoy digging. Keep water temperatures between 24°C and 28°C, with a pH range of 6.0 to 7.5. Regular water changes and strong filtration are necessary to maintain water quality.
 
Diet and Feeding
Green Severums are omnivores that require a varied diet to maintain their health and coloration. High-quality cichlid pellets or flakes should be their staple diet, supplemented with live or frozen foods such as bloodworms, brine shrimp, and earthworms. They also enjoy blanched vegetables like zucchini, spinach, and peas, which aid digestion and enhance their vibrant hues.
 
Behaviour and Tank Mates
While Severums are generally peaceful, they can be territorial, especially during breeding. Ideal tank mates include Silver Dollars, Plecos, Geophagus species, and larger tetras. Avoid aggressive cichlids or small fish that may become targets. Providing ample hiding spots and open swimming areas ensures a harmonious tank environment.
 
Breeding Green Severum Cichlids
Severums are substrate spawners, laying their eggs on flat surfaces like rocks or driftwood. During breeding, they become more territorial. Both parents will protect their eggs and fry, making them excellent caregivers. Once hatched, the fry should be fed baby brine shrimp or finely crushed flakes for optimal growth.
 
FAQs
How big do Green Severum Cichlids grow?
They can reach up to 20 cm, requiring a spacious tank.
 
Are they aggressive?
They are peaceful compared to many cichlids, but they can be territorial, especially during breeding.
 
What tank mates are suitable?
Good companions include Silver Dollars, Plecos, and larger tetras. Avoid very small or aggressive fish.
 
What do they eat?
A mix of cichlid pellets, live/frozen foods, and vegetables keeps them healthy.
 
Are they beginner-friendly?
Yes, they are hardy and adaptable, making them suitable for aquarists with some cichlid experience.
 
Species Overview
Species: Heros severus
Common Name: Green Severum Cichlid
Origin: Amazon Basin, South America
Diet: Omnivore
PH Range: 6.0–7.5
Temperature: 24°C–28°C
Max Size: Up to 20 cm
Tank Size: Minimum 200 liters