Can Green Terror and Norman's Lampeye Killifish Live Together?
Green Terror and Norman's Lampeye Killifish are not recommended as tank mates due to piscivorous fish will prey on nano-sized tank mates.. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.
At a Glance
Can your tank handle Green Terror and Norman's Lampeye Killifish?
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.
Shared setup supplies
We may earn from qualifying purchases
Behaviour & Temperament
Green Terror is a semi-aggressive species (8/10), while Norman's Lampeye Killifish is peaceful (1/10). This notable difference means Green Terror may occasionally assert dominance over Norman's Lampeye Killifish.
Large aggression gap (7 points) between Green Terror and Norman's Lampeye Killifish increases stress risk for the more peaceful fish.
Green Terror and Norman's Lampeye Killifish both frequent the 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.
There is a critical concern: the Piscivore (Eats small/nano fish) behaviour of one fish directly conflicts with the Nano / Bite-sized (Predation Risk) trait of the other — piscivorous fish will prey on nano-sized tank mates..
Worth noting: Norman's Lampeye Killifish is a known jumper, so a tight-fitting lid is essential.
Water Parameters
The safe temperature window for both species falls between 22°C and 28°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.
Both fish can tolerate a pH between 6.5 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 5–15 dGH. Regular testing will ensure conditions stay within this range.
Water care products
We may earn from qualifying purchases
Tank Setup
To house Green Terror and Norman's Lampeye Killifish together, plan for an aquarium of at least 200 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.
Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.
Specific environmental needs for this combination include: Sand (Sifters), Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels), Plants - Densely covered, Plants - Floating. Meeting these requirements will help both species thrive.
Note a potential conflict in setup requirements: Green Terror is a plant destroyer, which conflicts with Norman's Lampeye Killifish's requirement for live plants. Compromise where possible or prioritise the more critical need.
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 Green Terror and Norman's Lampeye Killifish.
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
Feeding products to consider
We may earn from qualifying purchases
.webp?2026-04-25T14%3A35%3A38.022Z)
Frequently Asked Questions
Can Green Terror and Norman's Lampeye Killifish live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Green Terror and Norman's Lampeye Killifish need?
A minimum of 200 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 Green Terror and Norman's Lampeye Killifish together?
Keep the aquarium between 22°C and 28°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.
Are Green Terror or Norman's Lampeye Killifish aggressive?
Green Terror is semi-aggressive (8/10) and Norman's Lampeye Killifish is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Green Terror and Norman's Lampeye Killifish need?
Both species overlap in the 6.5–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
How do I manage Green Terror's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Green Terror 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.
Related Comparisons
Green Terror & Andinoacara sp. Gold Saum
·
Green Terror & Blue Acara
·
Green Terror & Oscar
·
Green Terror & Parrot Cichlid
·
Green Terror & Platinum Acara
·
Green Terror & Red Terror (Festa's Cichlid)
·
Norman's Lampeye Killifish & Largereye Lampeye Killifish
·
Norman's Lampeye Killifish & Lyretail Killifish
·
Norman's Lampeye Killifish & Clown Killifish
·
Norman's Lampeye Killifish & Rachov's Killifish (Annual)
·
Norman's Lampeye Killifish & Ajamaru Rainbowfish
·
Norman's Lampeye Killifish & Allen's Rainbowfish
·