Care Requirements
Adult Size
5.9" (15cm)
Min Tank
55 gal
Temperature
72-82°F
pH Range
6.5-7.5
Lifespan
5-10 years
Min Group
Can be kept alone
Diet
Omnivore
Swim Level
Middle
Bioload
5/10
Hardness
4-18 dGH
About Jewel Cichlid
The Jewel Cichlid is one of the most visually stunning freshwater fish available—and also one of the most aggressive. When in breeding condition, both males and females transform into brilliant, jewel-like red fish covered in iridescent blue-green spots that sparkle like gemstones. This spectacular breeding coloration is among the most beautiful displays in the freshwater aquarium hobby.
Native to West Africa, Jewel Cichlids are robust, intelligent fish with big personalities. They recognize their owner, interact at the glass, actively rearrange their environment, and display complex parental behavior. A breeding pair working together to guard their fry is one of the most fascinating behaviors to observe in any aquarium fish.
However, their aggression—particularly during breeding—is extreme and often underestimated. A breeding pair will terrorize an entire tank, attacking fish many times their size to protect eggs and fry. Many keepers who start with Jewel Cichlids in a community eventually move them to a species-only setup. Understanding and planning for their aggression is essential for successful keeping.
Natural Habitat & Origin
Jewel Cichlids are widely distributed across West Africa, found in streams, rivers, forest pools, and lake margins from Senegal to Cameroon. They inhabit slow-moving water with muddy or sandy substrates, where vegetation, roots, and debris provide cover and breeding sites.
Their natural waters are warm and slightly acidic to neutral, with moderate hardness. The diversity of habitats they occupy in the wild reflects their adaptability in captivity. They're found in everything from forest streams to lake edges, always in areas where they can establish territories among cover.
Native Region
West Africa - Senegal to Cameroon
Habitat Type
Slow-moving rivers, streams, forest pools, lake margins
Wild Water Conditions
Warm (72-82°F), slightly acidic to neutral, muddy/sandy substrates with cover
Appearance & Varieties
Jewel Cichlids reach about 6 inches (15 cm) and undergo one of the most dramatic color transformations of any aquarium fish. In non-breeding condition, they're olive to brownish with two characteristic dark spots (one on the gill cover, one mid-body) and scattered iridescent spots.
When in breeding condition, both sexes transform to an intense, brilliant red covered in sparkling blue-green iridescent spots—the 'jewel' effect that gives them their name. Males are typically larger with more pointed dorsal and anal fins, but sexing is difficult outside breeding condition. Their coloration during breeding is genuinely one of the most spectacular sights in freshwater fishkeeping.
Tank Setup & Requirements
Quick Requirements Summary
Tank Size
Minimum Tank Size
55 gallons
Recommended Tank Size
75 gallons
Jewel Cichlids require a minimum of 40 gallons (150 liters) for a single specimen, with 60 gallons (225 liters) recommended for a pair. Floor space for territories is more important than tank height.
Water Parameters
Temperature 72-82°F (22-28°C), pH 6.5-7.5, hardness 5-15 dGH. They're adaptable but prefer slightly soft, neutral conditions. Maintain excellent water quality—they produce significant bioload.
Substrate
Sand or fine gravel—they dig extensively and will rearrange substrate constantly. Avoid sharp gravel that could injure them during digging.
Plants & Decorations
Plants are generally not recommended as they'll uproot them. Hardy plants like Anubias attached to rocks or Java fern on driftwood may survive. Rocks, driftwood, caves, and clay pots create territories and spawning sites. Secure all decorations—they move things.
Filtration & Water Flow
Strong filtration is important—they produce significant waste. Canister filters work well. They're not bothered by moderate current.
Lighting
Moderate—not critical. Their coloration shows well under standard aquarium lighting.
Diet & Feeding Guide
Diet Type
omnivore
Feeding Frequency
1-2x daily
Portion Size
What they consume in 2-3 minutes
Jewel Cichlids are omnivores with a preference for protein-rich foods. In the wild, they feed on insects, worms, crustaceans, small fish, and some plant matter. A high-protein diet enhances their red coloration, especially during breeding condition.
Best Foods for Jewel Cichlid
- High-quality cichlid pellets — Good staple—choose protein-rich formulas
- Frozen bloodworms — Excellent for enhancing red coloration
- Frozen brine/mysis shrimp — Good protein variety
- Chopped earthworms — Outstanding conditioning food for breeding
- Live foods — Promotes natural hunting behavior
- Chopped prawns — Occasional treat, high protein
Foods to Avoid
- Mammal meat/heart — Difficult to digest, causes fatty deposits
- Feeder fish — Disease risk, poor nutrition
- Low-quality foods — Directly impacts coloration intensity
Aggressive eaters—ensure all tank inhabitants get food if keeping with others. High-protein diet significantly enhances their red breeding coloration. Don't overfeed despite their enthusiasm.
Behavior & Temperament
Jewel Cichlids are highly aggressive, intelligent fish with complex social behavior. They're most notorious for their extreme breeding aggression—a bonded pair will attack anything that enters their territory, including fish many times their size, and will even bite the hands of aquarists during tank maintenance.
Outside of breeding, they're still confrontational and territorial, actively patrolling their claimed area and challenging perceived intruders. They dig extensively, rearrange substrate and decorations, and interact intelligently with their environment. They form strong monogamous pair bonds, with both parents sharing egg and fry guarding duties—a fascinating behavior to observe despite the chaos it causes for tankmates.
Tank Mates: Compatibility Guide
Compatible Tank Mates
Armored, stays out of the way—often works
Large enough to coexist in big tanks
Large, robust—may work in spacious tanks
Synodontis Catfish
Robust African catfish, compatible water parameters
Tank Mates to Avoid
Neon Tetra
Will be killed or eaten immediately
Guppy
Far too small and peaceful—will be destroyed
Any small fish
Will be killed, especially when breeding
Other cichlid pairs
Constant territorial warfare
Angelfish
Will be attacked and killed by breeding pair
Common Pairing Questions
Can Jewel Cichlids live in a community tank?
Only with extreme caution and robust, large tankmates. Single specimens are more manageable than pairs. A breeding pair will eventually attack everything. Most experienced keepers recommend species-only tanks for pairs.
Should I keep one Jewel Cichlid or a pair?
A single specimen is much easier to manage in a community setting. Pairs are fascinating for their parental behavior but require a dedicated tank due to extreme breeding aggression. Choose based on your tank setup and goals.
Jewel Cichlids are easy to breed—the challenge is managing the consequences. They form monogamous pairs and breed readily, becoming spectacularly colorful and spectacularly aggressive in the process.
Pairs clean a flat surface (rock, clay pot, or even glass) and the female lays 200-500 eggs in neat rows while the male fertilizes them. Both parents guard the spawn with extreme aggression, attacking anything that approaches—including the aquarist's hands during maintenance.
Eggs hatch in 2-3 days, and fry are large enough to eat baby brine shrimp immediately. Both parents herd and protect the fry, which is fascinating to observe. The parental care continues for several weeks, during which the entire tank is essentially their territory. Either keep them alone as a pair or be prepared to remove all other fish.
Health Issues & Disease Prevention
Jewel Cichlids are hardy, robust fish that rarely develop health problems when given adequate space and clean water. Their main health concerns are related to aggression—fighting injuries—rather than disease susceptibility.
Common Diseases
| Disease | Symptoms | Treatment |
|---|---|---|
| Ich (White Spot Disease) | White spots on body, flashing, lethargy | Raise temperature gradually, use ich medication. Hardy fish that usually recovers well. |
| Hole in the Head (HITH) | Pitting around head and lateral line | Improve diet variety, enhance water quality, metronidazole treatment. Often linked to poor nutrition or water quality. |
| Bloat | Swollen abdomen, loss of appetite, lethargy | Fast for several days, Epsom salt bath, improve diet. Avoid overfeeding and mammal-based proteins. |
Signs of a Healthy Jewel Cichlid
- Vibrant coloration (especially red when breeding)
- Active territorial behavior
- Good appetite
- Territorial displays and digging
- Intact fins
- Clear, alert eyes
Prevention Tips
- Maintain excellent water quality—strong filtration essential
- Regular 25-30% weekly water changes
- Varied, high-protein diet
- Adequate tank size for territories
- Quarantine new fish for 2-3 weeks
- Monitor for fighting injuries and treat promptly
- Don't overfeed despite their enthusiasm
Frequently Asked Questions
Extremely aggressive, especially when breeding. A breeding pair will attack and potentially kill any other fish in the tank, regardless of size. They're one of the most aggressive commonly available cichlids.
Only with extreme caution and robust tankmates. Single specimens are manageable, but pairs become too aggressive when breeding. Most keepers eventually move them to species-only tanks.
They're in breeding condition. Both males and females intensify to stunning red coloration when ready to spawn. This is also when aggression peaks dramatically.
They'll eat any fish small enough to fit in their mouth. More commonly, they'll kill tankmates through relentless aggression during breeding, even if they can't eat them.
Yes—single specimens are much more manageable than pairs. They're still somewhat aggressive but won't have the extreme breeding aggression. Often the best choice for community tanks.
No—they do perfectly well alone or as a pair. In fact, a species-only tank is often the safest setup. They're interactive enough with their owner that they don't need fish companions.
Tips for Keeping Jewel Cichlid
Pro Tips
- ✓Single specimens are much easier to manage than pairs
- ✓Species-only tank is often the best choice for pairs
- ✓Their breeding coloration is among the most stunning of any freshwater fish
- ✓They recognize their owner and will interact at the glass
- ✓Don't put your hand in the tank when they're guarding eggs/fry—they bite
- ✓Robust, intelligent fish with personality despite the aggression
- ✓Great for keepers who want cichlid behavior without a huge tank
- ✓If keeping a pair, expect to rehome other fish eventually
Common Mistakes to Avoid
- ✗Underestimating breeding aggression—it's extreme
- ✗Keeping pair in community tank—will eventually cause deaths
- ✗Small tank—need space for territories
- ✗Expensive aquascaping—they'll destroy it
- ✗Keeping with small fish—will be killed or eaten
- ✗Expecting them to calm down after spawning—they stay aggressive as parents
- ✗Reaching into tank during breeding—they bite hard
- ✗Multiple pairs in same tank—constant warfare
Sources
- FishBase — Accepted scientific name, maximum size and native range for Jewel Cichlid.
Related Species You Might Like
View All Fish →
Keyhole Cichlid
Cleithracara maronii
Auratus Cichlid
Melanochromis auratus
Cobalt Blue Zebra
Maylandia callainos
Convict Cichlid
Amatitlania nigrofasciata
Demasoni
Pseudotropheus demasoni
Red Zebra
Maylandia estherae
Chinese Algae Eater
Gyrinocheilus aymonieri
Green Spotted Puffer
Dichotomyctere nigroviridis
Ready to Add Jewel Cichlid to Your Tank?
Use our free stocking calculator to check compatibility, bioload, and get personalized recommendations.