🐟 Haitian Cichlid / Black Nasty Cichlid – (Nandopsis haitiensis) – Large Hispaniola Cichlid

The Haitian Cichlid (Nandopsis haitiensis), also widely known in the aquarium hobby as the Black Nasty Cichlid or Odo Cichlid, is a large, powerful Caribbean cichlid known for its dramatic black-and-white pattern, heavy adult body, impressive nuchal hump in mature males, and extremely territorial personality.

Despite the common name “Haitian Cichlid,” this species is not restricted to Haiti. It is endemic to the Caribbean island of:

HISPANIOLA

which includes both:

• 🇭🇹 Haiti
• 🇩🇴 Dominican Republic

This is a large, intelligent, highly territorial cichlid best suited to experienced aquarists prepared to provide substantial aquarium space, strong filtration, carefully selected tankmates, and the ability to separate incompatible fish when necessary.

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🔎 Quick Facts – Haitian Cichlid

• 📛 Common Name: Haitian Cichlid
• 📛 Other Names: Black Nasty Cichlid, Odo Cichlid, Haiti Cichlid
• 🔬 Scientific Name: Nandopsis haitiensis
• 📚 Older Scientific Name: Cichlasoma haitiensis
• 🐟 Family: Cichlidae
• 🌎 Native Region: Caribbean
• 🏝️ Native Island: Hispaniola
• 🇭🇹 Native Country: Haiti
• 🇩🇴 Native Country: Dominican Republic
• 💧 Natural Environments: Freshwater and some naturally brackish habitats
• 🌊 Habitat: Lakes, rivers, streams, springs, reservoirs and other inland waters
• 📏 Scientific Maximum: 21.5 cm / approximately 8.5 inches standard length
• 📏 Large Aquarium Adults: Approximately 12–14 inches
• 📏 Exceptional Male Potential: Larger individuals approaching 15–16 inches have been reported
• 🏠 Recommended Aquarium – Single Adult: Approximately 125 gallons or larger
• 🏠 Adult Pair: Approximately 180–250+ gallons strongly preferred
• 📐 Aquarium Length: Approximately 6 feet or longer preferred for large adults
• 🌡️ Temperature: Approximately 78–84°F
• 💧 pH: Approximately 7.0–8.5
• 💦 Hardness: Moderate to Hard
• 💨 Oxygenation: Good to High
• 🌊 Water Movement: Low to Moderate
• 🍽️ Diet: Omnivore
• 🌿 Plant / Algae Foods: Important
• 🐌 Mollusks / Snails: Part of documented natural diet
• 🦐 Animal Foods: Supplemental
• 😠 Temperament: Aggressive / Highly Territorial
• ⚠️ Breeding Aggression: Very High
• 🐠 Community Fish: Generally Not Recommended
• 🥚 Breeding: Open-Substrate Spawner
• 🪨 Spawning Site: Cleaned rock or other firm surface
• 👨‍👩‍👧 Parental Care: Strong parental care
• 🥚 Documented Egg Count: Approximately 150–200 eggs in FishBase records
• ⭐ Care Level: Advanced
• 🌎 IUCN Status: Least Concern
• 🚫 CITES: Not Listed / Not Evaluated by CITES

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🧬 Valid Scientific Species

The currently accepted scientific name is:

Nandopsis haitiensis

The species was originally described in:

1935

as:

Cichlasoma haitiensis

Modern taxonomy places it in the genus:

Nandopsis

Therefore, the correct product identification is:

Haitian Cichlid – (Nandopsis haitiensis)

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🏝️ Endemic to Hispaniola

One of the biggest corrections from older aquarium descriptions is the native range.

Nandopsis haitiensis is not simply:

“Native to Haiti.”

It is endemic to:

THE ENTIRE ISLAND OF HISPANIOLA

Hispaniola is divided politically between:

🇭🇹 HAITI

and:

🇩🇴 THE DOMINICAN REPUBLIC

Natural populations occur in both countries.

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🇭🇹 Haiti

Documented Haitian populations include waters associated with areas such as:

• Cul-de-Sac drainage
• Étang de Miragoâne
• Other Haitian rivers and inland waters

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🇩🇴 Dominican Republic

Documented Dominican populations include:

• Rio Yuna drainage
• Rio Yaque del Sur drainage
• Baní region
• Lago Enriquillo-associated springs
• Additional rivers, streams and inland waters

This makes the species a true:

HISPANIOLAN ENDEMIC

rather than a Haiti-only fish.

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🌊 Extremely Diverse Natural Habitats

One of the most interesting characteristics of the Haitian Cichlid is its ability to occur in many different environments.

Populations have been documented in:

• Mountain streams
• Lowland rivers
• Lakes
• Reservoirs
• Springs
• Slow-moving waters
• Flowing waters
• Freshwater
• Naturally brackish environments

This makes Nandopsis haitiensis much more ecologically flexible than its common aquarium description sometimes suggests.

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🧂 Brackish Populations Exist

FishBase recognizes Nandopsis haitiensis as occurring in:

FRESHWATER AND BRACKISH WATER

Some natural populations live in waters influenced by:

• Mineral-rich springs
• Coastal drainage
• Brackish conditions

However:

SALT IS NOT REQUIRED FOR NORMAL AQUARIUM CARE

Fish maintained successfully in freshwater should remain in stable freshwater unless there is a specific reason to reproduce the chemistry of a known locality.

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⚠️ Do Not Add Salt Just Because the Species Can Tolerate Brackish Water

Natural tolerance of brackish conditions does not mean every Haitian Cichlid needs:

• Aquarium salt
• Marine salt
• Constant salinity

Stable water chemistry is more important than trying to force every aquarium specimen into brackish conditions.

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🎨 Appearance

The Haitian Cichlid develops one of the most distinctive patterns among Caribbean cichlids.

Typical coloration can include:

• Ivory white
• Silver-gray
• Gray
• Olive-gray
• Charcoal
• Nearly black

with extensive:

• Black spotting
• Speckling
• Broken bands
• Reticulated markings
• Dark scale edging

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⚫ Why Is It Called the Black Nasty?

The aquarium nickname:

BLACK NASTY CICHLID

comes from the combination of its:

• Dark adult coloration
• Bold territorial behavior
• Powerful body
• Strong breeding aggression

The nickname describes its aquarium reputation.

It is not part of the scientific name.

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🎨 Color Can Change Dramatically

Nandopsis haitiensis can change appearance according to:

• Age
• Mood
• Sex
• Social status
• Breeding condition
• Stress
• Aquarium background
• Lighting

Some individuals may appear almost:

IVORY WHITE WITH BLACK SPECKLING

while others become:

VERY DARK GRAY OR NEARLY BLACK

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👶 Juvenile Appearance

Juveniles can display:

• Dark vertical bars
• Mid-body blotches
• Gray-brown coloration
• Fine spotting

The pattern changes considerably as the fish matures.

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👑 Mature Male Nuchal Hump

Large mature males can develop an impressive:

NUCHAL HUMP

on the forehead.

The hump may become especially pronounced in:

• Older males
• Dominant males
• Breeding males

Not every male develops an equally large hump.

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⚠️ Never Guarantee a Huge Nuchal Hump

Nuchal-hump development depends on:

• Genetics
• Sex
• Age
• Hormonal condition
• Social dominance
• Nutrition

A customer should never be promised that a young fish will develop an enormous forehead hump.

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📏 Adult Size – Important Clarification

FishBase documents a maximum of:

21.5 CM / APPROXIMATELY 8.5 INCHES STANDARD LENGTH

Standard length measures from the snout to the base of the tail.

It:

DOES NOT INCLUDE THE FULL CAUDAL FIN

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📏 Aquarium Males Can Grow Considerably Larger

Experienced cichlid keepers have documented aquarium males exceeding:

30 CM / APPROXIMATELY 12 INCHES

and exceptional captive specimens approaching:

40 CM / NEARLY 16 INCHES

Your current large specimen demonstrates why the FishBase standard-length record should not be used as a hard aquarium maximum.

For responsible customer planning:

EXPECT APPROXIMATELY 12–14 INCHES FOR A LARGE ADULT

with exceptional males potentially growing larger.

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⚠️ This Is a Large Cichlid

A Haitian Cichlid should not be purchased with the expectation that it will remain:

• 6 inches
• 8 inches
• A medium community cichlid

Large males can become:

• Long
• Deep-bodied
• Heavy
• Extremely territorial

Permanent housing should be selected accordingly.

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🏠 Aquarium Size – Single Adult

For one mature Haitian Cichlid:

125 GALLONS OR LARGER

is a responsible long-term recommendation.

A large male benefits greatly from:

• 6 feet of aquarium length
• Good front-to-back width
• Large territories
• Heavy filtration

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❤️ Adult Pair

A compatible breeding pair needs substantially more room.

I would recommend:

180–250+ GALLONS

whenever possible.

More space provides:

• Escape distance
• Multiple territories
• Broken sightlines
• Room for a female to retreat
• Greater water volume

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⚠️ A Pair Is Not Automatically Safe

A male and female Haitian Cichlid are not guaranteed to remain compatible.

Even an established pair can suddenly become:

VIOLENTLY AGGRESSIVE

toward one another.

A large male can seriously injure or kill a female.

Anyone attempting to maintain a pair should have:

• A sturdy divider
• A backup aquarium
• Multiple escape areas
• Close observation

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🛑 Be Prepared to Separate Them

When keeping a pair:

ALWAYS HAVE A SEPARATION PLAN

Do not wait until severe injuries occur before deciding how the fish can be separated.

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🪨 Aquarium Setup

A good Haitian Cichlid aquarium should include:

• Large rocks
• Large driftwood
• Strong caves
• Visual barriers
• Open swimming space
• Sand or smooth gravel
• Heavy filtration

Décor should divide the aquarium into:

SEPARATE VISUAL TERRITORIES

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👀 Break the Line of Sight

This is especially important for:

• Pairs
• Multiple large cichlids
• Breeding fish

Use:

• Large driftwood
• Rock structures
• Tall sturdy décor

to prevent one fish from constantly seeing and pursuing another across the entire aquarium.

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⚠️ Secure All Décor

Large Haitian Cichlids are powerful.

They may:

• Dig
• Move gravel
• Push rocks
• Rearrange wood
• Uproot plants

Heavy rocks should be positioned securely so they cannot:

• Collapse
• Trap a fish
• Damage aquarium glass

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🌿 Plants

Young fish may occur naturally around aquatic vegetation.

However, large adults are usually poor candidates for carefully landscaped planted aquariums.

They may:

• Dig around roots
• Uproot plants
• Damage delicate vegetation
• Rearrange substrate

Hardy plants attached securely to rocks or wood may have a better chance of surviving.

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💧 Water Chemistry – An Adaptable Species

Because Nandopsis haitiensis occurs in many different natural environments, there is no single water chemistry that represents every wild population.

Some habitats are:

• Freshwater
• Hard
• Alkaline
• Mineral-rich

while others can have different chemistry.

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🌡️ Temperature

For aquarium maintenance, a practical range is:

78–84°F

The species comes from a warm Caribbean environment.

Some wild localities have been recorded at considerably warmer temperatures, but there is generally no need to maintain aquarium fish constantly at extreme temperatures.

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💧 pH

A practical range is:

pH 7.0–8.5

This species generally does especially well in:

NEUTRAL TO ALKALINE WATER

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💦 Hardness

Moderately mineralized to hard water is appropriate.

A practical approach is:

MODERATE TO HARD WATER

with stable chemistry.

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⚠️ Stability Is More Important Than Chasing an Exact Number

Avoid continually changing:

• pH
• Hardness
• Temperature

trying to reach one exact value.

Stable, clean water is much safer than constant chemical adjustment.

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💨 Oxygenation

Provide:

GOOD TO HIGH OXYGENATION

using:

• Strong surface movement
• Air stones when useful
• Sump returns
• Canister-filter returns

Large cichlids consume substantial oxygen, especially in warm water.

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🌊 Water Movement

Unlike rheophilic plecos that require strong current, the Haitian Cichlid does not need an artificial river torrent.

Use:

LOW TO MODERATE WATER MOVEMENT

while maintaining excellent:

• Oxygenation
• Surface agitation
• Filtration

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💩 Heavy Bioload

A mature Haitian Cichlid is a:

LARGE, HEAVY-FEEDING FISH

and can produce substantial waste.

Strong filtration is essential.

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💩 Filtration

Suitable systems include:

• Large canister filters
• Sump filtration
• Strong biological filtration
• High-capacity mechanical filtration
• Prefilters

Maintain:

AMMONIA = 0

and:

NITRITE = 0

at all times.

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🔄 Water Changes

Regular partial water changes are extremely important.

The exact frequency depends on:

• Aquarium volume
• Fish size
• Feeding
• Stocking
• Filtration
• Nitrate production

For a large adult:

DO NOT ALLOW ORGANIC WASTE TO BUILD UP

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🍽️ Diet – Important Correction

The Haitian Cichlid is sometimes described online as a:

PREDATORY CARNIVORE

That is too simplistic.

Wild feeding records document consumption of:

• Algae
• Aquatic plants
• Snails / turret shells

Therefore, a more accurate description is:

OMNIVORE WITH A STRONG PLANT / ALGAE COMPONENT AND MOLLUSK FEEDING

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🌿 Plant & Algae Foods

Plant-based nutrition should not be ignored.

Suitable foods include:

• Spirulina-containing pellets
• Vegetable-based cichlid foods
• Quality omnivore pellets
• Blanched greens
• Peas
• Other appropriate vegetable matter

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🐌 Snails Are Part of the Natural Diet

FishBase specifically documents consumption of:

TURRET SHELLS / SNAILS

in the wild.

Appropriate captive mollusk foods can therefore provide useful:

• Dietary enrichment
• Natural feeding behavior
• Variety

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🦐 Animal Foods

Animal foods can include:

• Mysis shrimp
• Brine shrimp
• Krill
• Insect larvae
• Quality cichlid pellets
• Appropriate crustacean foods

The goal should be:

VARIETY

rather than maintaining the fish exclusively on heavy animal protein.

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🚫 Avoid a Meat-Only Diet

Do not feed the Haitian Cichlid exclusively:

• Shrimp
• Fish
• Bloodworms
• High-protein carnivore pellets

because its documented natural feeding ecology includes substantial plant material.

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🚫 Avoid Feeder Fish

Live feeder fish are unnecessary.

They can introduce:

• Parasites
• Bacteria
• Disease
• Nutritional deficiencies

A balanced prepared and frozen diet is safer.

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😠 Temperament – Highly Territorial

The Haitian Cichlid has earned its aquarium reputation.

Adults can become:

EXTREMELY TERRITORIAL

especially:

• Toward their own species
• During pair formation
• During spawning
• While guarding fry

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🐠 Best Housing Strategy

For many aquarists, the safest approach is:

ONE ADULT PER AQUARIUM

A compatible pair can be maintained by experienced keepers in a very large aquarium, but compatibility must be monitored.

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⚠️ Tankmates

Tankmate selection is difficult.

Potential tankmates would need to be:

• Large
• Robust
• Confident
• Fast enough to avoid constant harassment
• Compatible with the same water conditions

Even then:

NO TANKMATE IS GUARANTEED TO BE SAFE

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🚫 Avoid Small or Passive Fish

Do not combine a mature Haitian Cichlid with:

• Small community fish
• Timid cichlids
• Slow delicate fish
• Fish unable to defend territory

They may be:

• Harassed
• Injured
• Killed

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⚔️ Breeding Aggression

Once a pair begins spawning:

AGGRESSION CAN INCREASE DRAMATICALLY

Tankmates that were previously tolerated may suddenly become targets.

Species-only breeding setups are strongly preferred.

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♂️ Male vs. Female

Mature males generally become:

• Larger
• Heavier
• More massive through the head
• More likely to develop a prominent nuchal hump
• Longer in the dorsal and anal fins

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♀️ Females

Females generally remain:

• Smaller
• Less heavily built
• Less likely to develop an enormous forehead hump

However, individual variation can be substantial.

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⚠️ Size Alone Is Not Perfect Sexing

A younger male can be smaller than an older female.

Sex should be determined using multiple characteristics rather than one feature alone.

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🥚 Breeding – Open-Substrate Spawner

Nandopsis haitiensis is an:

OPEN-SUBSTRATE SPAWNER

The adults prepare a firm spawning surface such as:

• Flat rock
• Large stone
• Other solid surface

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🧹 Cleaning the Spawning Surface

Before spawning, the pair may spend considerable time:

CLEANING A ROCK

or other selected location.

This is typical cichlid preparation for egg deposition.

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🥚 Documented Egg Count

FishBase records approximately:

150–200 EGGS

being deposited on a cleaned stone.

Aquarium females can potentially produce different numbers depending on:

• Female size
• Age
• Condition
• Previous spawning history

Therefore:

DO NOT GUARANTEE AN EXACT CLUTCH SIZE

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👩 Female Egg Care

Scientific records specifically document the:

FEMALE CARING FOR THE EGGS AND LARVAE

She may:

• Fan the eggs
• Remove damaged eggs
• Guard the spawning surface
• Tend developing larvae

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👨 Male Territory Defense

The male typically plays an important role in:

• Defending the territory
• Driving away threats
• Protecting the outer perimeter

Both parents can become extremely aggressive during brood defense.

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👨‍👩‍👧 Strong Parental Care

The species displays substantial:

PARENTAL CARE

which makes breeding behavior fascinating to observe.

However, the same behavior also makes breeding pairs potentially dangerous to:

• Tankmates
• Each other
• The aquarist's hands during maintenance

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⚠️ Watch the Female Closely

Even after successful spawning:

PAIR COMPATIBILITY CAN BREAK DOWN

A male may suddenly attack the female.

Always provide:

• Hiding areas
• Escape space
• Divider access
• Backup housing

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👶 Fry

Once fry become free-swimming, suitable first foods can include:

• Newly hatched brine shrimp
• Fine cichlid fry foods
• Quality powdered foods
• Fine spirulina-containing foods

As they grow, gradually introduce larger foods.

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🌿 Juvenile Diet

Remember that natural juvenile feeding can include substantial:

ALGAE AND PLANT MATERIAL

so developing fish should receive varied nutrition rather than only animal protein.

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🌎 Conservation Status

Nandopsis haitiensis is currently assessed as:

LEAST CONCERN

on the IUCN Red List.

The current assessment dates to:

2020

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🏝️ Endemic Species Still Deserves Responsible Care

Least Concern does not change the fact that this species is:

NATIVE ONLY TO HISPANIOLA

Responsible aquarium ownership remains important.

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🆚 Haitian Cichlid vs. Cuban Cichlid

The Haitian Cichlid is closely related to the:

CUBAN CICHLID – Nandopsis tetracanthus

They should not be confused.

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Haitian Cichlid

Nandopsis haitiensis

• Hispaniola
• Haiti and Dominican Republic
• Extensive fine dark spotting
• Large males may develop pronounced nuchal humps

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Cuban Cichlid

Nandopsis tetracanthus

• Cuba
• Different geographic species
• Variable black-and-white pattern

Both belong to:

Nandopsis

but they are separate species and should remain separately identified.

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🧬 Preserve Pure Nandopsis Lines

If breeding:

• Keep N. haitiensis with verified N. haitiensis
• Keep N. tetracanthus separately
• Keep N. ramsdeni separately

Do not intentionally hybridize them and later sell offspring as pure species.

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🛡️ Handling Large Adults

Large Haitian Cichlids have:

• Strong jaws
• Powerful bodies
• Sharp dorsal spines
• Strong territorial instincts

Use caution during:

• Netting
• Tank cleaning
• Moving décor
• Breeding

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⚠️ Large Cichlids Can Bite

A territorial adult may attempt to bite:

• Hands
• Nets
• Cleaning equipment

especially when guarding:

• Eggs
• Fry
• Territory

Use appropriate care around large breeding adults.

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⭐ Why Keep a Haitian Cichlid?

The Haitian Cichlid combines:

• ⚫ Dramatic black-and-white coloration
• 🏝️ Unique Hispaniola origin
• 👑 Impressive mature male nuchal hump
• 🐟 Large adult size
• 🧠 Intelligent cichlid behavior
• 😠 Powerful territorial personality
• 🐌 Unusual natural snail-feeding behavior
• 🌿 Interesting plant-and-algae component to its natural diet
• 🥚 Open-substrate spawning
• 👨‍👩‍👧 Strong parental care
• 🧬 Distinct Caribbean cichlid lineage

into an impressive species for experienced large-cichlid keepers.

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⚠️ Important Considerations

Before purchasing a Haitian Cichlid:

• The correct scientific name is Nandopsis haitiensis.
• Older literature may use Cichlasoma haitiensis.
• “Black Nasty” and “Odo” are aquarium/common names.
• The species is endemic to Hispaniola.
• It naturally occurs in both Haiti and the Dominican Republic.
• Do not describe it as Haiti-only.
• It occupies lakes, rivers, streams and other inland waters.
• Some populations naturally occur in brackish environments.
• Aquarium salt is not automatically required.
• FishBase documents 21.5 cm standard length.
• Standard length excludes the full tail.
• Aquarium males exceeding 12 inches are documented.
• Exceptional specimens can grow larger.
• Plan for approximately 12–14 inches for a large adult.
• Provide approximately 125 gallons or larger for one adult.
• A 180–250+ gallon aquarium is strongly preferred for an adult pair.
• A 6-foot or longer aquarium is recommended for large adults.
• Provide substantial rocks, wood and visual barriers.
• Secure all heavy décor.
• Maintain approximately 78–84°F.
• Maintain neutral to alkaline water.
• Maintain approximately pH 7.0–8.5.
• Moderate to hard water is appropriate.
• Provide good oxygenation.
• Use powerful filtration.
• Maintain ammonia and nitrite at zero.
• Do not describe the species as strictly carnivorous.
• Wild fish consume algae, aquatic vegetation and snails.
• Feed a varied omnivorous diet.
• Include plant and algae-based foods.
• Provide appropriate animal foods for variety.
• Avoid feeder fish.
• Expect very strong territorial behavior.
• Single-specimen housing is often safest.
• Adult pairs require careful monitoring.
• Always have a divider or backup aquarium available when keeping a pair.
• Breeding aggression can be extreme.
• The species is an open-substrate spawner.
• FishBase documents spawning on cleaned stones.
• Approximately 150–200 eggs have been documented.
• The female provides direct care to eggs and larvae.
• Both parents may participate in brood defense.
• Keep N. haitiensis separate from other Nandopsis breeding lines.
• The species is currently Least Concern.
• Never release aquarium fish into natural waterways.

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🧬 Taxonomy

The currently accepted scientific name is:

Nandopsis haitiensis (Tee-Van, 1935)

Classification:

• Order: Cichliformes
• Family: Cichlidae
• Genus: Nandopsis
• Species: haitiensis

Original scientific combination:

Cichlasoma haitiensis

Native range:

HISPANIOLA – HAITI & DOMINICAN REPUBLIC

For this product, use:

Haitian Cichlid – (Nandopsis haitiensis)

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🏝️ Hispaniola Locality Disclaimer

The name:

HAITIAN CICHLID

can make it sound as though this fish occurs only in Haiti.

That is incorrect.

Nandopsis haitiensis is native to:

THE ISLAND OF HISPANIOLA

and naturally occurs in both:

• Haiti
• Dominican Republic

Preserve locality information when known, especially for breeding populations.

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🚚 Live Fish Shipping

Live fish are professionally packed for safe transport.

Shipping availability depends on:

• Fish size
• Destination
• Weather conditions
• Carrier availability
• Applicable state and local regulations

Large Haitian Cichlids may require:

• Larger insulated shipping boxes
• Additional water
• Heavy-duty shipping bags
• Multiple protective bag layers
• Specialized packing
• Airline cargo shipping depending on size and destination

Large specimens should be handled carefully because of their:

• Powerful body
• Sharp dorsal spines
• Large adult size

Please review our Shipping & Payment Information and Live Arrival Guarantee / DOA Policy before ordering.

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⚠️ Buyer Responsibility

Customers are responsible for confirming that Nandopsis haitiensis may legally be purchased, possessed, transported, and received in their state or local jurisdiction before ordering.

Never release aquarium fish into natural waterways.