Quick Stats
| Adult Size | 20 cm |
| Minimum Tank | 55 gal |
| Temperature | 24–28°C |
| pH Range | 6.0–7.0 |
| Hardness (GH) | 4–12 dGH |
| Difficulty | Easy |
| Temperament | Semi-aggressive |
| Diet | Omnivore — pellets, frozen foods, blanched vegetables, algae |
| Schooling | Pairs or groups |
Tank Setup
The Severum (Heros severus) requires a minimum tank size of 55 gal. For a species this size, a larger tank is always better — more water volume means more stable parameters and a healthier environment.
Water parameters should be maintained within the following ranges: temperature 24–28°C, pH 6.0–7.0, and hardness 4–12 dGH. These are relatively tolerant fish that adapt to a range of conditions.
Provide appropriate hiding places, a suitable substrate, and planted areas to match the natural behaviour of this species.
Tank Mates
Severum are semi-aggressive fish. Choose tankmates carefully — they may not be suitable for all community setups.
Compatible tank mates include: Silver Dollar, Bristlenose Pleco, Geophagus, Rainbowfish, Larger Tetras. Always ensure all species share similar water parameter requirements before mixing.
Schooling requirements: Pairs or groups.
Diet & Feeding
Severum are Omnivore. Feed a varied diet to ensure optimal health and colouration.
Omnivore — pellets, frozen foods, blanched vegetables, algae
Feed small amounts 1–2 times daily. Only provide what the fish can consume within 2–3 minutes to prevent overfeeding and water quality issues. Supplement with live or frozen foods for optimal health and colour.
Common Health Issues
Like all aquarium fish, Severum can be susceptible to common diseases including ich (white spot disease), fin rot, and bacterial infections. This species is generally hardy and disease-resistant when kept in good conditions.
Prevention is always better than treatment. Maintain stable water parameters, avoid overfeeding, quarantine new fish before adding them to the main tank, and perform regular water changes. A regular maintenance routine will prevent most health issues.
If disease does occur, isolate affected fish in a quarantine tank and treat appropriately. Always research medication compatibility before use — some treatments are toxic to invertebrates and scaleless fish.
Breeding
Breeding Severum is possible in the home aquarium.
Provide appropriate breeding conditions — caves or hiding places for egg-laying species. Condition breeding pairs with high-quality foods before attempting to spawn them.
Many Severum will breed readily without intervention. Be prepared to remove eggs or fry if you want to raise them — adult fish may eat their own young.
Frequently Asked Questions
What size tank does a Severum need?
A Severum needs a minimum tank size of 55 gal. However, larger is always better — more water volume means more stable water parameters and healthier fish.
Are Severum easy to keep?
Severum are rated as Easy difficulty. Beginners can keep them successfully with proper research and a cycled tank.
What do Severum eat?
Severum are Omnivore. Feed a varied diet including pellets, frozen foods, blanched vegetables, algae.
Can Severum live with other fish?
Severum are semi-aggressive. Compatible tankmates include: Silver Dollar, Bristlenose Pleco, Geophagus, Rainbowfish, Larger Tetras. Always research compatibility before mixing species.