Demasoni Cichlid
Pseudotropheus demasoni
The Demasoni Cichlid (Pseudotropheus demasoni) is an aggressive fish that's best left to experienced keepers. Give it a tank of at least 110 litres (29 US gallons), water held at 75-82°F, and a pH of 7.5-8.6.
Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Africa (Lake Malawi)
- Africa
Regional colours match the stocking calculator's origin map.
Demasoni Cichlid Tank Setup
Give them at least 110 litres (29 US gallons). Cichlids are territorial and produce plenty of waste, so strong filtration and some rocks or wood to break up sight lines both help. Aim for 75-82°F and a pH around 7.5-8.6.
What Do Demasoni Cichlids Eat?
They're bottom feeders, so give them sinking wafers, tablets, or frozen treats like bloodworm once the lights go down. Flakes that never reach the bottom leave them hungry even when the tank looks well-fed.
Demasoni Cichlid Tank Mates
Lake Malawi mbuna - needs hard, alkaline water; soft or acidic water causes chronic stress. Highly aggressive dwarf mbuna; keep in a colony of 8+ with ample rockwork to spread aggression. Avoid mixing with similarly coloured mbuna. Largely algae-grazing - avoid protein-heavy foods that can cause bloat. The Demasoni Cichlid is aggressive, which is the first thing to weigh up when you choose tank mates. It's a known fin-nipper, so avoid bettas, guppies, and other slow, long-finned fish. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.
Are Demasoni Cichlids Good for Beginners?
Not a sensible first purchase. Get the tank cycled, keep easier fish stable for a year, then revisit if you still want the extra work this species demands.
Demasoni Cichlid - frequently asked questions
What size tank do Demasoni Cichlids need?
Demasoni Cichlids need a tank of at least 110 litres (29 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
What water parameters do Demasoni Cichlids need?
Keep them at 75-82°F with a pH of 7.5-8.6, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.
What do Demasoni Cichlids eat?
Demasoni Cichlids are bottom feeders. Give them sinking wafers, tablets, and frozen foods that settle on the substrate, ideally after the lights go off. Feed small amounts once or twice a day, and remove anything they don't eat.
Are Demasoni Cichlids good for beginners?
Demasoni Cichlids are not a beginner species. They need precise conditions and consistent maintenance, so build experience with hardier fish before keeping them.
Common mistakes with Demasoni Cichlids
- Underestimating tank size - the minimum footprint is 110 litres (29 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.
- Mixing with long-finned fish - Demasoni Cichlids will nip at bettas, angelfish, and other fish with flowing fins, causing stress and infection risk.
Building a community? Run the full list through the stocking calculator before you add anything else.
Great tank mates
Chosen from temperament, overlapping temperature/pH bands, plausible minimum tank footprints, and size versus yours in App-aquatic data. Hobby nuance always wins - verify stocking and temperament before purchasing.
Check Demasoni Cichlid against any other fish → Compares water parameters, predation risk, fin nipping and tank size, and draws both at life size.
Fish to avoid mixing with Demasoni Cichlids
These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.
- Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
- Common GoldfishGoldfish - prefer cooler, harder water that tropical fish cannot tolerate
- GuppyIncompatible temperament or care requirements
