Photo: Klaus Rudloff (CC BY-SA 4.0) — via Wikimedia Commons
Ice Blue Cichlid (Maylandia greshakei)
A powder-blue mbuna from Lake Malawi with vivid orange on the dorsal — bold, beautiful, and built for hard alkaline water.
Will it live with a Ice Blue Cichlid?
We compare each fish against your ice blue cichlid on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- African Dwarf Frog✅ CompatiblePeaceful · 4 cm · Medium care · 22–26 °C (72–79 °F)
- Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
- Bearded Corydoras✅ CompatiblePeaceful · 10 cm · Medium care · 18–24 °C (64–75 °F)
- Compatible on the things that matter: shared water near 24–24 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Bearded Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Blue Turbo Snail✅ CompatiblePeaceful · 5 cm · Medium care · 25–30 °C (77–86 °F)
- Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 25–28 °C — no size, zone or temperament conflicts.
- Cherry Shrimp✅ CompatiblePeaceful · 3 cm · Easy care · 18–28 °C (64–82 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Cherry Shrimp in a shoal of 10+ or it gets stressed and nippy.
- Corydoras Catfish✅ CompatiblePeaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
- Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
- Keep Corydoras Catfish in a shoal of 6+ or it gets stressed and nippy.
- Ghost Shrimp✅ CompatiblePeaceful · 4 cm · Easy care · 18–28 °C (64–82 °F)
- Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
- Keep Ghost Shrimp in a shoal of 6+ or it gets stressed and nippy.
- Japanese Trapdoor Snail✅ CompatiblePeaceful · 5 cm · Easy care · 10–28 °C (50–82 °F)
- Aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Malaysian Trumpet Snail✅ CompatiblePeaceful · 3 cm · Easy care · 21–27 °C (70–81 °F)
- Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Marbled Hoplo✅ CompatiblePeaceful · 14 cm · Easy care · 22–28 °C (72–82 °F)
- Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
- Red Lip Nerite Snail✅ CompatiblePeaceful · 2 cm · Easy care · 22–28 °C (72–82 °F)
- Aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Spotfin Corydoras✅ CompatiblePeaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
- Aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Spotfin Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Spotted Talking Catfish✅ CompatiblePeaceful · 15 cm · Easy care · 22–26 °C (72–79 °F)
- Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
- Sterbai Corydoras✅ CompatiblePeaceful · 6.5 cm · Medium care · 24–30 °C (75–86 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Sterbai Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Upside-down Catfish✅ CompatiblePeaceful · 10 cm · Easy care · 22–26 °C (72–79 °F)
- Aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Boesemani Rainbowfish⚠️ With cautionPeaceful · 11 cm · Medium care · 24–28 °C (75–82 °F)
- Ice Blue Cichlid and Boesemani Rainbowfish are close in size, but the aggressive one tends to dominate — add boesemani rainbowfish in a group to spread the pressure.
- Keep Boesemani Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Bristlenose Pleco⚠️ With cautionPeaceful · 12 cm · Easy care · 23–30 °C (73–86 °F)
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Bristlenose Pleco 6–7.5) — target the overlap and acclimate slowly.
- Clown Rasbora⚠️ With cautionPeaceful · 10 cm · Medium care · 23–28 °C (73–82 °F)
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Clown Rasbora 5.5–7) — target the overlap and acclimate slowly.
- Expect Ice Blue Cichlid to harass Clown Rasbora at times; give dense cover and watch them at feeding.
- Keep Clown Rasbora in a shoal of 6+ or it gets stressed and nippy.
- Giant Betta⚠️ With cautionPeaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Giant Betta 5–7) — target the overlap and acclimate slowly.
- One likes softer water and the other harder (10–25 vs 1–8 dGH) — a compromise, not a perfect match.
- Expect Ice Blue Cichlid to harass Giant Betta at times; give dense cover and watch them at feeding.
- Giant Danio⚠️ With cautionPeaceful · 10 cm · Easy care · 20–27 °C (68–81 °F)
- Different pH ranges (7.6–8.6 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
- Ice Blue Cichlid is aggressive and may chase or nip the smaller Giant Danio — plant heavily and break up sight lines.
- Keep Giant Danio in a shoal of 6+ or it gets stressed and nippy.
- Giant Kuhli Loach⚠️ With cautionPeaceful · 12 cm · Easy care · 24–30 °C (75–86 °F)
- Different pH ranges (7.6–8.6 vs 6–7.5); doable if you sit in the shared band, but not ideal long-term.
- Keyhole Cichlid⚠️ With cautionPeaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Keyhole Cichlid 6–7.5) — target the overlap and acclimate slowly.
- Ice Blue Cichlid and Keyhole Cichlid are close in size, but the aggressive one tends to dominate — add keyhole cichlid in a group to spread the pressure.
- Kuhli Loach⚠️ With cautionPeaceful · 10 cm · Easy care · 24–30 °C (75–86 °F)
- Different pH ranges (7.6–8.6 vs 5.5–7); doable if you sit in the shared band, but not ideal long-term.
- Water hardness preferences differ (Ice Blue Cichlid 10–25 vs Kuhli Loach 1–8 dGH).
- Mascara Barb⚠️ With cautionPeaceful · 12 cm · Medium care · 20–25 °C (68–77 °F)
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Mascara Barb 6–7.5) — target the overlap and acclimate slowly.
- Ice Blue Cichlid and Mascara Barb are close in size, but the aggressive one tends to dominate — add mascara barb in a group to spread the pressure.
- Your 190 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
- Keep Mascara Barb in a shoal of 8+ or it gets stressed and nippy.
- Medusa Pleco⚠️ With cautionPeaceful · 12 cm · Medium care · 26–30 °C (79–86 °F)
- Different pH ranges (7.6–8.6 vs 6.4–7.4); doable if you sit in the shared band, but not ideal long-term.
- Molly⚠️ With cautionPeaceful · 10 cm · Easy care · 23–28 °C (73–82 °F)
- Expect Ice Blue Cichlid to harass Molly at times; give dense cover and watch them at feeding.
- Murray River Rainbowfish⚠️ With cautionPeaceful · 11 cm · Easy care · 15–26 °C (59–79 °F)
- Expect Ice Blue Cichlid to harass Murray River Rainbowfish at times; give dense cover and watch them at feeding.
- Keep Murray River Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Pearl Gourami⚠️ With cautionPeaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
- Different pH ranges (7.6–8.6 vs 6–7.5); doable if you sit in the shared band, but not ideal long-term.
- Expect Ice Blue Cichlid to harass Pearl Gourami at times; give dense cover and watch them at feeding.
- Rubber Lip Pleco⚠️ With cautionPeaceful · 12 cm · Easy care · 20–26 °C (68–79 °F)
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Rubber Lip Pleco 6.5–7.5) — target the overlap and acclimate slowly.
- Spotted Rubbernose Pleco⚠️ With cautionPeaceful · 12 cm · Medium care · 20–26 °C (68–79 °F)
- Different pH ranges (7.6–8.6 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
- Striped Eel Loach⚠️ With cautionPeaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Striped Eel Loach 6–7.2) — target the overlap and acclimate slowly.
- Alligator Gar⛔ Not recommendedAggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
- Two assertive fish, one genuinely aggressive: Ice Blue Cichlid and Alligator Gar will hold territory and clash.
- Alligator Gar (250 cm) is big enough to swallow the 12 cm Ice Blue Cichlid whole.
- Alligator Gar is slow and long-finned; a busy ice blue cichlid shoal tends to nip at it. Keep ice blue cichlid in a proper group of 5+ and watch them closely.
- Your 190 L tank is below the ~3785 L this pairing really wants — crowding raises aggression.
- Clown Knifefish⛔ Not recommendedAggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
- Ice Blue Cichlid and Clown Knifefish are both territorial and at least one is outright aggressive — expect serious fighting.
- Ice Blue Cichlid is bite-sized to a 90 cm predatory clown knifefish — it will be eaten.
- Different pH ranges (7.6–8.6 vs 6–7.5); doable if you sit in the shared band, but not ideal long-term.
- Your 190 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
- Fire Eel⛔ Not recommendedSemi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
- Ice Blue Cichlid and Fire Eel are both territorial and at least one is outright aggressive — expect serious fighting.
- Fire Eel (100 cm) is big enough to swallow the 12 cm Ice Blue Cichlid whole.
- Different pH ranges (7.6–8.6 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
- Your 190 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
- Koi⛔ Not recommendedPeaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
- Koi (90 cm) is big enough to swallow the 12 cm Ice Blue Cichlid whole.
- Ice Blue Cichlid is a notorious fin-nipper — even though Koi is larger, an active shoal will harass its trailing fins. Only safe in a full group of 5+ with plenty of cover.
- Your 190 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
- Mekong Giant Catfish⛔ Not recommendedSemi-aggressive · 300 cm · Hard care · 20–28 °C (68–82 °F)
- Two assertive fish, one genuinely aggressive: Ice Blue Cichlid and Mekong Giant Catfish will hold territory and clash.
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Mekong Giant Catfish 6.5–7.5) — target the overlap and acclimate slowly.
- Mekong Giant Catfish is slow and long-finned; a busy ice blue cichlid shoal tends to nip at it. Keep ice blue cichlid in a proper group of 5+ and watch them closely.
- Your 190 L tank is below the ~100000 L this pairing really wants — crowding raises aggression.
- Redtail Catfish⛔ Not recommendedAggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
- Two assertive fish, one genuinely aggressive: Ice Blue Cichlid and Redtail Catfish will hold territory and clash.
- Size gap is too large (120 vs 12 cm): Redtail Catfish will treat Ice Blue Cichlid as food.
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Redtail Catfish 6–7.5) — target the overlap and acclimate slowly.
- Your 190 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
- Spotted Gar⛔ Not recommendedAggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
- Two assertive fish, one genuinely aggressive: Ice Blue Cichlid and Spotted Gar will hold territory and clash.
- Spotted Gar (90 cm) is big enough to swallow the 12 cm Ice Blue Cichlid whole.
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Spotted Gar 6.5–7.5) — target the overlap and acclimate slowly.
- Spotted Gar is slow and long-finned; a busy ice blue cichlid shoal tends to nip at it. Keep ice blue cichlid in a proper group of 5+ and watch them closely.
- Your 190 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
- Wels Catfish⛔ Not recommendedAggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
- Two assertive fish, one genuinely aggressive: Ice Blue Cichlid and Wels Catfish will hold territory and clash.
- Wels Catfish (300 cm) is big enough to swallow the 12 cm Ice Blue Cichlid whole.
- pH preferences only just meet (Ice Blue Cichlid 7.6–8.6 vs Wels Catfish 6.5–7.5) — target the overlap and acclimate slowly.
- Your 190 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
Compatibility is computed from each species' care data — a strong starting point, not a guarantee. Individual temperament varies, so always introduce new fish slowly and watch them.
Ice Blue Cichlid care specs
- Care level
- Medium
- Breeding
- Medium
- Max size
- 12 cm (4.7 in)
- Min tank size
- 190 L (50.2 gal)
- Temperature
- 24–28 °C (75–82 °F)
- pH
- 7.6–8.6
- Hardness
- 10–25 dGH
- Lifespan
- 5–8 years
- Diet
- Herbivore
- Swim level
- Middle
- Group size
- 5+ (shoaling)
- Family
- Cichlidae
- Origin
- Lake Malawi, East Africa (rocky littoral zone)
What is an Ice Blue Cichlid?
The Ice Blue Cichlid (Maylandia greshakei, formerly classified as Pseudotropheus greshakei) is a mbuna — a hard-substrate, rock-dwelling cichlid — endemic to Lake Malawi in East Africa. Males are unmistakable: the body is a clean, saturated powder-blue, and the dorsal fin blazes orange to yellow-gold, a flush that brightens noticeably when a male is competing or courting. Females are a plain grey-brown, which is typical of mbuna where cryptic colouration helps females avoid the constant aggression that males direct at one another.
At up to 12 cm (4.7 in), the Ice Blue sits in the mid-size range for a mbuna and is one of the most frequently recommended entry points into Lake Malawi cichlid keeping. It is hardy, colours up reliably under good conditions, and breeds readily in captivity. That accessibility comes with a genuine caveat: this is an aggressive species that belongs in a purpose-built mbuna setup, not a general community tank.
Where do Ice Blue Cichlids come from?
Maylandia greshakei is endemic to Lake Malawi, the ninth-largest lake in the world, situated along the East African Rift Valley and shared between Malawi, Tanzania and Mozambique. The species occupies the rocky littoral zone — the shallow, wave-washed band of boulders and rubble along the shoreline — where it grazes algae (aufwuchs) from rock surfaces.
Lake Malawi is chemically unusual: it has been isolated for millions of years, is fed largely by mineral-rich springs, and loses water mainly through evaporation, leaving behind an extraordinarily stable, hard and alkaline body of water. pH rarely moves outside 7.6–8.6 across the whole lake, and hardness is consistently 10–25 dGH. The fish have evolved in lockstep with that stability, which is why replicating those parameters is not optional — it is the foundation of the whole setup.
What tank size and setup do Ice Blue Cichlids need?
A minimum of 190 litres (50 gallons) is required, and that figure assumes a single-male colony (one male with four or more females). Larger volumes — 300 L (80 gal) and above — make aggression management significantly easier and open the door to keeping multiple mbuna species.
Aquascape with stacked rockwork as the dominant feature: caves, crevices, overhangs and passageways that allow subordinate fish to vanish from a dominant male’s sightline within a body-length. This is not decoration — it is the primary mechanism for keeping aggression at a manageable level. A fine sand or smooth gravel substrate suits the species; do not rely on rooted plants, as mbuna will uproot most of them and the hard, alkaline water rules out the majority of aquatic plant species anyway. Leave open sand areas in the foreground where fish can forage and display.
Filtration should be robust — target a turnover of 8–10 times the tank volume per hour and supplement with a good surface agitation or airstone. Mbuna are metabolically active and produce significant waste. Weekly water changes of around 25–30% are essential.
What water parameters do Ice Blue Cichlids need?
- Temperature: 24–28 °C (75–82 °F) — a reliable heater is non-negotiable.
- pH: 7.6–8.6. Below 7.5 causes chronic stress over time.
- Hardness: 10–25 dGH. Carbonate hardness (KH) in particular provides the buffer that keeps pH stable.
If your tap water is soft or neutral, raise and buffer it with a dedicated Malawi cichlid salt mix, or run crushed coral or aragonite in the sump or a mesh bag in the filter. Test regularly: a drop in KH often precedes a dangerous pH crash. Do not mix Ice Blue Cichlids with fish requiring soft or acidic water — the chemistry requirements are irreconcilable, and one group will suffer.
What do Ice Blue Cichlids eat?
Ice Blue Cichlids are herbivores in the wild, grazing the thin algal film (aufwuchs) that grows on submerged rocks. In the aquarium, the backbone of the diet should be high-vegetable-content pellets or flakes formulated for mbuna or African cichlids — products listing spirulina, kelp or other plant matter near the top of the ingredients list.
Supplement with blanched spinach, zucchini or nori (dried seaweed) for variety. Avoid high-protein foods such as beef heart, bloodworms or shrimp-heavy diets fed regularly; a gut adapted to plant matter does not process large quantities of animal protein efficiently, and chronic high-protein feeding is associated with the potentially fatal condition known as Malawi bloat. Small, twice-daily feedings are preferable to one large meal.
How aggressive are Ice Blue Cichlids, and what can live with them?
Bluntly, Ice Blue Cichlids are aggressive — the frontmatter rating of “Aggressive” is accurate and should be taken seriously. Males establish and defend territories with real determination, and without adequate space and cover, subordinate fish (including females) can be harassed into exhaustion or death.
Within a mbuna community, the standard strategy is: one male of each species, multiple females of each, mixed species of similar size and disposition, slight overstocking (roughly 1 fish per 20–25 L) to dilute the aggression across many targets, and dense rockwork. Closely related species or species with similar colouration draw heightened aggression from males competing for the same niche.
Ice Blue Cichlids are not suitable for general tropical communities. Fish from soft-water habitats — tetras, rasboras, gouramis, discus — cannot tolerate the water chemistry and will be bullied. Large, robust non-cichlids that tolerate hard alkaline water (such as some synodontis catfish) can work as dither fish or bottom-dwellers in a large enough tank.
For a full list of tested compatible and incompatible species, see Ice Blue Cichlid tank mates.
How do you tell male Ice Blue Cichlids from females?
Adult males are straightforward to identify. They display a vivid powder-blue body colouration with a bright orange-to-yellow flush on the dorsal fin that deepens during dominance displays and breeding condition. The anal fin carries prominent egg-spots — round, yolk-yellow markings that mimic eggs and play a role in spawning behaviour.
Females are considerably plainer: grey-brown overall, smaller at full growth, and lacking the orange dorsal colouration. Juveniles of both sexes start similarly drab; males typically begin colouring up between 5–8 cm as they mature. Purchasing a group of six or more juveniles and allowing them to sex out naturally is the most reliable way to end up with a well-balanced colony.
How do Ice Blue Cichlids breed?
Ice Blue Cichlids are maternal mouthbrooders, a reproductive strategy common across the mbuna group. After a courtship display in which the male circles and flares at the female, spawning occurs on a flat rock surface. The female collects the eggs in her mouth and then mouths at the male’s egg-spots on the anal fin, stimulating him to release sperm that fertilises the eggs inside her buccal cavity.
The female broods the eggs and fry for approximately three weeks, eating little or nothing during this period. When the fry are fully formed and free-swimming, she releases them; they are immediately independent. A brooding female can be identified by the distended lower jaw and reluctance to eat.
In a colony setup, brooding females benefit from a refuge — a cave or dense rock stack where dominant males cannot reach them. If aggression is severe, a brooding female can be moved to a separate holding tank for the final week of the brooding period. Fry are robust enough to accept crushed cichlid pellets and finely powdered food from day one.
What diseases are common in Ice Blue Cichlids?
The most feared disease in Malawi cichlid keeping is Malawi bloat — a rapid, often fatal internal condition linked to high-protein feeding, poor water quality or stress. Symptoms include severe abdominal swelling, loss of appetite and rapid breathing. Prevention centres on a correct vegetable-based diet, stable water chemistry and low-stress housing.
Ich (white spot) can appear after chilling during transport or water changes, and responds well to raised temperature and standard treatment when caught early. Bacterial infections — including fin rot and ulcers — are almost always secondary to aggression wounds or declining water quality; address the root cause first.
Health note: medication dosing and disease diagnosis are beyond the scope of a care profile. For sick fish, confirm symptoms against a reputable veterinary or fish-health source before medicating. Quarantine new fish for at least two weeks before introducing them to an established mbuna tank.
How long do Ice Blue Cichlids live?
With correct water chemistry, a varied herbivore diet and a low-stress tank environment, Ice Blue Cichlids typically live 5–8 years. Specimens kept in poor water, fed high-protein diets or housed under constant aggression tend to fall well short of that range. The single greatest investment in longevity is getting the water parameters right from the start and maintaining them consistently — Lake Malawi itself barely fluctuates month to month, and the fish are built to expect the same from their home aquarium.
Frequently asked questions
Can I keep Ice Blue Cichlids with other mbuna?
Yes, with careful planning. Mix species of similar size and aggression, avoid closely related or similarly coloured males that draw extra rivalry, and overstock slightly (1 fish per 20–25 L) with heavy rockwork to break sightlines. Never keep two males of the same species without a very large tank.
Why do Ice Blue Cichlids need such hard, alkaline water?
Lake Malawi is one of the world's most chemically stable lakes — extremely hard, alkaline and buffered. Fish from this lake have evolved kidneys and physiology tuned to those conditions and suffer chronic stress, suppressed immunity and shortened lives in soft or acidic water. Match the lake chemistry as closely as possible.
What you need to keep a ice blue cichlid
The baseline is a heated, filtered 190 L+ tank: a reliable heater to hold 24–28 °C (75–82 °F), a gentle filter that won't batter a ice blue cichlid in the current, and a tight-fitting lid. Cycle the tank fully before adding any fish.
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