Can Geophagus Orange Head Tapajos and Severum Live Together?
Keeping Geophagus Orange Head Tapajos and Severum together is possible but requires caution, though some care is needed. Provide a spacious tank of at least 280 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.
At a Glance
Can your tank handle Geophagus Orange Head Tapajos and Severum?
Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.
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Behaviour & Temperament
Geophagus Orange Head Tapajos is a generally mild-mannered species (3/10), while Severum is moderately assertive (5/10). This modest difference means Severum may occasionally assert dominance over Geophagus Orange Head Tapajos.
Geophagus Orange Head Tapajos and Severum both frequent the Bottom (Substrate) and Middle (Open Water) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.
To improve the chances of a peaceful coexistence in this community tank: Provide a significantly larger tank (at least 50% more volume than the minimum) to allow both Geophagus Orange Head Tapajos and Severum to establish separate territories. Add plenty of line-of-sight breaks using driftwood, rocks, and dense planting to reduce territorial confrontations.
Water Parameters
The safe temperature window for both species falls between 26°C and 29°C. Aim for the midpoint of this range (around 27.5°C) for optimal comfort.
Both fish can tolerate a pH between 6 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 4–10 dGH. Regular testing will ensure conditions stay within this range.
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Tank Setup
To house Geophagus Orange Head Tapajos and Severum together, plan for an aquarium of at least 280 litres with a minimum length of 120 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.
Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.
Specific environmental needs for this combination include: Sand (Sifters), Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.
Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.
Suitable Tank Sizes
Standard aquarium sizes large enough for both Geophagus Orange Head Tapajos and Severum.
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
180 Gallon Standard
350 Liter (120cm Deep)
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Frequently Asked Questions
Can Geophagus Orange Head Tapajos and Severum live together?
They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 280 litres), plenty of hiding spots, and watch for signs of stress or aggression.
What size tank do Geophagus Orange Head Tapajos and Severum need?
A minimum of 280 litres (tank length at least 120 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.
What water temperature is best for Geophagus Orange Head Tapajos and Severum together?
Keep the aquarium between 26°C and 29°C. A target of around 27.5°C sits comfortably within both species' preferred ranges.
Are Geophagus Orange Head Tapajos or Severum aggressive?
Geophagus Orange Head Tapajos is generally mild-mannered (3/10) and Severum is moderately assertive (5/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Geophagus Orange Head Tapajos and Severum need?
Both species overlap in the 6–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
How do I manage Severum's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Severum space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.
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