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Nandopsis tetracanthus — Cuban Cichlid

Cuban Cichlid

Nandopsis tetracanthus

Cuba's top predator. A spectacular black-and-white mosaic cichlid that completely inverts its colors when breeding. Viciously aggressive and requires hard, alkaline or even brackish water.

Température de l’eau

24 - 30 °C

Valeur du pH

7 - 8.5

Type d'eau

Eau douce

Niveau dans le bac

Fond et milieu

Taille adulte

25 cm

Volume minimal du bac

>= 300 L

Groupe minimal

>= 1

GH

10 - 25 dGH

KH

5 - 12 dKH

TDS

200 - 495 ppm

Conductivité

313 - 773 uS/cm

Description de l'espèce

Geographical Origin and Habitat: Endemic to Cuba. Inhabits slow-flowing rivers, lakes, and does not disdain at all the brackish waters of estuaries and coastal mangrove lagoons.
Taxonomy and Morphology: Cuban Cichlid (Nandopsis tetracanthus). Large Central American cichlid (Guapote). Powerful profile, large head with extensible mouth of a formidable predator and robust scales.
Social Behavior: Highly aggressive and intolerant. It is a "guapote" (predatory cichlid) and will act as such, claiming large chunks of territory. Forms extremely tight but violent pair bonds.
Coloration and Sexual Dimorphism: Stunning "checkerboard" livery. Silvery or golden light background heavily spotted with high contrast raven black. Adult males sport a nuchal hump and extended fins. In breeding, the lower part becomes opaque raven black.

Soins, reproduction et cohabitation

Aquarium Setup: Tank for beasts (minimum 150 cm / 60 inches). Requires huge rocks and heavy woods to delimit the territory. No plants (would dig them up). The substrate will be moved continuously, so avoid fragile or fertile bottoms.
Diet and Feeding: Opportunistic Piscivore/Omnivore. Will eat crabs, giant insects and fish. In the aquarium they devour large pellets for carnivores, shelled shrimp, earthworms. Do not overfeed to avoid obesity.
Water Quality: Extreme tolerance to salts. Requires hard and alkaline water (ph 7.5-8.5). The addition of sea salt is excellent if they show signs of stress. They soil enormously, oversized filtration is needed.
Compatibility and Cohabitation: Impossible with community fish. Pair (in huge tanks) only with other armored Central American monsters (Jaguar Cichlid, Midas, large Plecostomus) or keep them in a single pair in a dedicated tank.
Aquarium Breeding: Spawners on flat rocks. Pre-reproductive skirmishes look like attempted murders (brutal "Lip-locking"). They lay up to 1000 eggs; the pair will massacre anyone approaching within a meter of the nest.
Risks and Diseases: Lethal Divorce. The "close-knit" pair can suddenly break up. The male will turn on the female killing her in a few hours if there are no "target" fish (giant dither fish) to vent the aggression on, or if the tank is too narrow.

Origine et répartition géographiques

Endemic to Cuba. Inhabits slow-flowing rivers, lakes, and does not disdain at all the brackish waters of estuaries and coastal mangrove lagoons.

Origine

Amérique centrale et Caraïbes

Profil de poisson

Tempérament
Semi-aggressive
Their temperament is notoriously aggressive, highly territorial, and unforgiving towards intruders. They will boldly interact with their owners but attack tank invaders. Careful planning of tank decor is required to provide sightline breaks.
Régime alimentaire
Omnivore
In the wild, they are formidable predators feeding on fish and crustaceans. In the home aquarium, they should be fed high-quality cichlid pellets. Live or frozen meaty foods like earthworms help maintain their coloration.
Espérance de vie
9-12 years
Taille adulte
25 cm
Ratio des sexes
Solitary
Cuban Cichlids are best kept as a single male-female bonded pair for breeding. For general display purposes, a single specimen of either sex is safest. Keeping multiple males in the same tank usually results in fatal conflicts.
Fréquence d'alimentation
Twice daily
Adults typically only need to be fed once or twice a day. Overfeeding should be avoided to prevent excessive waste and water quality issues. Juveniles can be fed slightly more often to support rapid growth.
Charge biologique
Medium
The Cuban Cichlid produces a substantial bioload typical of large predators. Their messy eating habits demand heavy, oversized filtration to maintain pristine water conditions. Frequent massive water changes are vital to keep nitrates low.
Courant
Stagnant
They prefer moderate water flow that provides good oxygenation without overpowering them. Strong filtration naturally creates sufficient current for their environment. Excessive turbulence should be avoided to allow them comfortable resting areas.
Risque de saut
Yes
While not notorious jumpers, their powerful build means they can breach the surface. A secure, heavy lid is recommended to keep them safely contained. A fully covered tank also prevents them from splashing water out.
Reproduction
Oviparous
They are biparental substrate spawners that become extremely aggressive during breeding. The female lays eggs on a flat rock while the male defends the territory. Both parents provide excellent care to the fry against any threats.
Compatibilité et compagnons
Highly aggressive
This is a highly aggressive and territorial species that dislikes tank mates. They are best kept either as a single wet pet or a bonded pair. If housed with others, companions must be equally large and robust.
Niveau dans le bac
Middle/Bottom
They predominantly occupy the middle to lower levels of the water column. They are known to dig and rearrange substrate to establish territories. Ample swimming space above the substrate is necessary for their patrols.

Modèles et paramètres scientifiques

FishBase

Fenêtre sur les données scientifiques officielles de l’espèce

FishBase v25.04Données synchronisées le : 15/06/2026
Niveau trophique
3,7 ± 0,58 se
Résilience
Élevée (moins de 15 mois)
Singularité phylogénétique (PD50)
0.625
Relation bayésienne longueur-poids
a = 0.02692, b = 3.02
VulnérabilitéVulnérabilité faible (14 / 100)