🐟 Trimac Cichlid / Three Spot Cichlid – (Amphilophus trimaculatus) – Powerful Central American Cichlid

The Trimac Cichlid, also known as the Three Spot Cichlid (Amphilophus trimaculatus), is a large, powerful Central American cichlid famous for its three prominent dark body markings, brilliant red eyes, yellow-to-gold coloration, red highlights, intelligence, and extremely territorial personality.

A mature Trimac can become an impressive centerpiece fish, particularly large males that develop:

• Heavy body proportions
• Strong jaws
• Extended dorsal and anal fins
• Intense yellow-gold coloration
• Red coloration around the throat and gill region
• Iridescent green or blue highlights
• A pronounced nuchal hump in some mature males

This is also one of the more aggressive Central American cichlids commonly maintained in aquariums.

A Trimac should therefore be purchased because the aquarist specifically wants to keep a:

LARGE, POWERFUL, TERRITORIAL CICHLID

—not as a general community fish.

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🔎 Quick Facts – Trimac / Three Spot Cichlid

• 📛 Common Name: Trimac Cichlid
• 📛 Other Names: Three Spot Cichlid, Three-Spot Cichlid, Red-Eyed Cichlid
• 🔬 Scientific Name: Amphilophus trimaculatus
• 📚 Older Names: Cichlasoma trimaculatum, Cichlasoma trimaculatus, Heros trimaculatus
• 🐟 Family: Cichlidae
• 🌎 Origin: Mexico and Central America
• 🌊 Native Range: Pacific-slope river systems of Mexico, Guatemala, and El Salvador
• 💧 Water Type: Freshwater
• 🏞️ Natural Habitat: Slow-moving lower river valleys with mud or sand, roots, weeds, and submerged structure
• 📏 Current Listing Size: Approximately 7–8 inches
• 🩹 Current Specimen Note: Prior healed injury visible on the side
• 📏 Maximum Scientific Record: Male 36.5 cm / 14.4 inches standard length before the tail
• 📏 Adult Male Planning Size: Approximately 14–16+ inches
• 📏 Adult Female Size: Commonly substantially smaller; approximately 9–10 inches is a reasonable planning range
• 🏠 Recommended Permanent Aquarium: Approximately 125 gallons or larger for one large adult
• 🏠 Preferred Large-Male Aquarium: 150–180+ gallons where possible
• 💕 Adult Pair: Very large aquarium strongly recommended; approximately 180–240+ gallons with the ability to separate the pair
• 📐 Recommended Aquarium Length: Approximately 6 feet or longer for a large adult
• 🌡️ Temperature: Approximately 75–82°F
• 💧 pH: Approximately 6.5–8.0
• 💦 Hardness: Soft to moderately hard; stability is more important than chasing one exact number
• 🌊 Water Movement: Moderate
• 💨 Oxygenation: Good to High
• 🍽️ Diet: Predatory Omnivore / Carnivore-Leaning Cichlid
• 🐟 Natural Foods: Small fish, macroinvertebrates, aquatic insects, terrestrial insects
• 🦐 Aquarium Protein Foods: Important
• 🌿 Plant Matter: Supplemental dietary variety
• 😠 Temperament: Highly Aggressive and Territorial
• 🚨 Safest Housing: Single-Specimen Aquarium
• ⚠️ Tankmates: Only with extreme caution in very large aquariums
• 🥚 Breeding: Open-Substrate Spawner
• 👨‍👩‍👧 Parental Care: Biparental
• 🥚 Large Female Clutch: More than 1,000 eggs possible
• ⭐ Care Level: Advanced because of aggression, size, and space requirements
• 🌎 IUCN Status: Least Concern

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🧬 Correct Scientific Name

The accepted scientific name is:

Amphilophus trimaculatus

The species was originally described by:

Albert Günther in 1867

as:

Heros trimaculatus

Older aquarium books and websites may use:

• Cichlasoma trimaculatum
• Cichlasoma trimaculatus
• Amphilophus trimaculatum

The current accepted name is:

Amphilophus trimaculatus

For this product, use:

Trimac Cichlid / Three Spot Cichlid – (Amphilophus trimaculatus)

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⚠️ Scientific Name Formatting

The species name should be written:

Amphilophus trimaculatus

not:

Amphilophus Trimaculatus

In scientific names:

• The genus begins with a capital letter.
• The species name remains lowercase.
• Both words should be italicized.

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3️⃣ Why Is It Called the Three Spot Cichlid?

The common name comes from the prominent dark markings positioned along the side of the fish.

Depending on:

• Age
• Sex
• Mood
• Breeding condition
• Individual genetics

these markings can appear as:

• Three major black spots
• Several interrupted blotches
• A broken lateral pattern
• Dark breeding bars

The classic three dark markings are generally associated with the:

• Shoulder / opercular region
• Middle of the body
• Caudal-peduncle region

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👁️ Brilliant Red Eyes

One of the most recognizable Trimac characteristics is its:

BRIGHT RED EYE

which contrasts dramatically with the:

• Yellow
• Gold
• Olive
• Greenish

body coloration.

This characteristic also explains the alternative common name:

RED-EYED CICHLID

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🎨 Appearance

Trimacs can display combinations of:

• Yellow
• Gold
• Olive green
• Gray-green
• Red
• Orange-red
• Turquoise
• Blue-green iridescence
• Black body markings

The exact coloration varies considerably between individuals.

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🔴 Red Throat & Gill Coloration

Healthy mature specimens can develop intense reddish coloration around the:

• Throat
• Chest
• Gill covers
• Lower body
• Pectoral-fin region

This can become especially intense during:

BREEDING CONDITION

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✨ Iridescent Highlights

Individual scales may develop:

• Green
• Turquoise
• Blue-green

iridescent highlights.

These can become more visible under:

• Proper aquarium lighting
• Good diet
• Mature coloration
• Breeding condition

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♂️ Mature Males

Males generally become:

MUCH LARGER THAN FEMALES

and can develop:

• Larger head
• Heavier jaw
• Longer dorsal fin
• Longer anal fin
• More elongated fin tips
• Stronger body proportions
• More pronounced nuchal hump

A mature dominant male can become an extremely impressive aquarium fish.

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🧠 Nuchal Hump

Some mature males develop a noticeable:

NUCHAL HUMP

on the forehead.

Its development can vary with:

• Genetics
• Age
• Dominance
• Nutrition
• Reproductive condition

Not every male develops the same size hump.

Therefore:

A LARGE NUCHAL HUMP SHOULD NEVER BE GUARANTEED

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⚠️ Color Disclaimer

Exact adult coloration cannot be guaranteed.

Trimacs may change substantially according to:

• Genetics
• Age
• Sex
• Dominance
• Stress
• Aquarium background
• Lighting
• Diet
• Breeding condition

A juvenile or stressed fish may look dramatically different from a mature dominant adult.

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🌎 Native Distribution

The Trimac is native to the:

PACIFIC SLOPE OF MEXICO AND CENTRAL AMERICA

The strongest modern taxonomic references recognize native populations from:

• 🇲🇽 Mexico
• 🇬🇹 Guatemala
• 🇸🇻 El Salvador

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⚠️ Remove Belize From the Origin

The current product page lists:

• Mexico
• Belize
• Guatemala
• Honduras
• El Salvador

I would remove:

BELIZE

from the native range.

Belize lies primarily within the Atlantic/Caribbean drainage region and is not part of the accepted core native distribution of Amphilophus trimaculatus.

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🇭🇳 What About Honduras?

Some secondary fish references extend the southeastern end of the distribution to the:

RIO GOASCORÁN

which forms part of the border between:

• El Salvador
• Honduras

However, major current taxonomic databases summarize the accepted native range as:

PACIFIC-SLOPE RIVERS OF MEXICO, GUATEMALA & EL SALVADOR

That is the cleaner wording for the product page.

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🏞️ Natural Habitat

Wild Trimacs inhabit:

SLOW-MOVING LOWER RIVER VALLEYS

They are associated with:

• Mud bottoms
• Sand bottoms
• Aquatic vegetation
• Roots
• Submerged branches
• Protected river margins
• Slower water

This is not a fish requiring an extreme high-current river aquarium.

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🌊 Water Movement

Provide:

MODERATE WATER MOVEMENT

with excellent:

• Filtration
• Surface agitation
• Oxygen exchange

The aquarium should contain enough circulation to prevent:

• Dead spots
• Waste buildup

without creating an unnecessary torrent.

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📏 Adult Size – Important

FishBase documents male Amphilophus trimaculatus reaching:

36.5 CM STANDARD LENGTH

which equals approximately:

14.4 INCHES BEFORE THE FULL TAIL FIN

This is larger than many aquarium care sheets imply.

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♂️ Male Adult Planning Size

Because:

STANDARD LENGTH EXCLUDES THE TAIL

a large mature male deserves planning for approximately:

14–16+ INCHES TOTAL LENGTH

Individual fish may remain smaller, but permanent housing should be designed around the large end of the species' potential.

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♀️ Female Size

Females remain significantly smaller.

FishBase documents females at approximately:

25 CM / 9.8 INCHES TOTAL LENGTH

Therefore, a practical planning range for mature females is approximately:

9–10 INCHES

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⚠️ Strong Sexual Size Difference

The difference between male and female size is important when:

• Selecting tank size
• Forming breeding pairs
• Planning dividers
• Managing aggression

A large male may completely overpower a much smaller female.

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🏠 Aquarium Size – Important Update

The current page recommends:

75+ GALLONS

I would not use 75 gallons as the permanent recommendation for a fish capable of reaching approximately:

14–16+ INCHES

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🏠 Single Adult

For one mature Trimac:

125 GALLONS OR LARGER

is a more responsible permanent starting point.

For an exceptionally large male:

150–180+ GALLONS

provides significantly better:

• Swimming room
• Turning room
• Territory
• Water volume
• Filtration capacity

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📐 Aquarium Length

A large adult should ideally have:

APPROXIMATELY 6 FEET OR MORE OF AQUARIUM LENGTH

Long aquariums are far more useful than tall tanks.

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📐 Width Matters Too

A mature male is:

• Long
• Deep-bodied
• Thick
• Highly active

so front-to-back aquarium width matters.

Choose:

LONG + WIDE

rather than:

TALL + NARROW

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🚨 Solo Housing Is Safest

For most aquarists:

ONE TRIMAC PER AQUARIUM IS THE SAFEST LONG-TERM PLAN

This species can become exceptionally territorial.

An adult may attack:

• Other cichlids
• Catfish
• Plecos
• Smaller fish
• Similar-sized fish
• Its own mate

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😠 Highly Aggressive

The Trimac is not merely:

“semi-aggressive.”

It should be described as:

HIGHLY AGGRESSIVE AND TERRITORIAL

especially:

• After sexual maturity
• During breeding
• In confined aquariums
• Around established territory

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🧠 Intelligent & Interactive

Trimacs can become highly responsive to their keeper.

An established adult may:

• Follow people along the glass
• Recognize feeding routines
• Investigate movement
• Defend the aquarium
• Rearrange its environment
• Respond aggressively to objects outside the glass

This behavior makes the Trimac appealing to keepers who enjoy:

PERSONALITY FISH

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🪨 Aquarium Setup

A suitable Trimac aquarium should include:

• Open swimming room
• Sand or smooth gravel
• Large smooth rocks
• Heavy driftwood
• Large sturdy shelters
• Powerful filtration

Keep the layout relatively simple.

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🚜 Expect Major Digging

Trimacs are powerful:

DIGGERS

especially when:

• Establishing territory
• Preparing to breed
• Rearranging their surroundings

They may move substantial amounts of:

• Sand
• Gravel
• Small rocks

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⚠️ Secure All Heavy Décor

Do not place heavy rocks loosely on top of deep substrate.

A Trimac can:

DIG UNDER THEM

and potentially cause the structure to collapse.

Large rocks should be securely positioned so the fish cannot undermine them.

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🌿 Plants

Most delicate planted aquariums are inappropriate.

Trimacs may:

• Uproot plants
• Bite leaves
• Move substrate
• Rearrange decorations

Artificial décor or extremely durable plants may be more practical.

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💩 Heavy Bioload

Large aggressive cichlids:

EAT A LOT AND PRODUCE A LOT OF WASTE

Strong filtration is essential.

Suitable systems include:

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

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💧 Water Parameters

A practical long-term range is:

• 🌡️ Temperature: Approximately 75–82°F
• 💧 pH: Approximately 6.5–8.0
• 💦 Hardness: Soft to moderately hard
• 🌊 Water Movement: Moderate
• 💨 Oxygenation: Good to High
• ☠️ Ammonia: 0 ppm
• ☠️ Nitrite: 0 ppm
• 🔄 Nitrate: Keep as low as reasonably practical

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⚠️ Stability Matters More Than Chasing Numbers

Wild Trimacs occur through multiple Pacific-slope river systems.

Instead of repeatedly changing aquarium chemistry to target an exact number:

MAINTAIN CLEAN, STABLE WATER

within a reasonable range.

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🔄 Regular Water Changes

Large Trimacs benefit from regular substantial water changes because of their:

• Large appetite
• Rapid growth
• Heavy waste production

The exact schedule depends on:

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

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🍽️ Natural Diet

Wild Amphilophus trimaculatus feed on:

• Small fish
• Macroinvertebrates
• Aquatic insects
• Terrestrial insects

This makes the species naturally:

CARNIVORE-LEANING / PREDATORY OMNIVOROUS

rather than primarily herbivorous.

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🍽️ Aquarium Diet

A high-quality staple can include:

• Large cichlid pellets
• Insect-based cichlid pellets
• Quality sticks
• Balanced formulated foods

Rotate those with appropriate frozen or fresh foods.

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🦐 Supplemental Protein Foods

Suitable foods include:

• Shrimp
• Krill
• Mysis shrimp
• Earthworms
• Insect larvae
• Appropriate frozen cichlid foods

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🌿 Plant Matter

Some plant-based ingredients can provide useful dietary variety.

This can come from:

• Balanced formulated pellets
• Spirulina-containing foods
• Small amounts of suitable vegetables

However:

TRIMACS DO NOT REQUIRE A VEGETABLE-HEAVY DIET

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🚫 Avoid Feeder Fish

Even though wild Trimacs consume small fish:

LIVE FEEDER FISH ARE NOT NECESSARY

Feeder fish may introduce:

• Parasites
• Bacteria
• Disease
• Poor nutritional balance

Quality prepared and frozen foods are safer.

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⚠️ Avoid Chronic Overfeeding

Large cichlids will often behave as though they are hungry even when adequately fed.

Chronic overfeeding can contribute to:

• Obesity
• Excess waste
• Poor water quality
• Fatty deposits

Feed for healthy body condition rather than maximum bulk.

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🐠 Tankmates

There is no universally safe Trimac tankmate.

For most adult specimens:

SOLO HOUSING IS THE SAFEST RECOMMENDATION

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⚠️ Large Tankmates Are Not Automatically Safe

Even very large fish can be:

• Attacked
• Harassed
• Pinned
• Bitten
• Prevented from feeding

by a dominant Trimac.

Do not assume another fish is safe simply because it is:

THE SAME SIZE

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🛡️ Plecos & Catfish

Large armored catfish and plecos are sometimes maintained with aggressive Central American cichlids.

However:

THIS DOES NOT GUARANTEE COMPATIBILITY

A Trimac may repeatedly attack a bottom-dwelling fish even if it cannot immediately kill it.

Monitor closely for:

• Fin damage
• Eye injuries
• Scrapes
• Hiding
• Refusal to feed
• Chronic stress

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♂️ Male vs. Female

Sex differences become pronounced with maturity.

Mature Males

Generally:

• Grow much larger
• Develop longer dorsal and anal fins
• Have heavier heads
• Develop stronger jaws
• May develop a nuchal hump
• Become intensely territorial

Mature Females

Generally:

• Remain smaller
• Have a rounder abdominal profile
• Can become extremely colorful during breeding
• Are still highly territorial when guarding eggs or fry

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🥚 Captive Breeding – Well Documented

Trimacs reproduce readily when a:

COMPATIBLE PAIR

is established.

They are:

OPEN-SUBSTRATE SPAWNERS

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🪨 Spawning Site

Pairs usually choose a cleaned:

• Flat rock
• Large stone
• Slate surface
• Similar solid surface

The pair thoroughly cleans the site before spawning.

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🥚 More Than 1,000 Eggs Possible

FishBase reports that:

LARGE FEMALES CAN LAY MORE THAN 1,000 EGGS

This makes the Trimac an extremely productive cichlid under suitable conditions.

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♀️ Sexual Maturity

Scientific references report females reaching sexual maturity at approximately:

8–10 CM

while males mature at approximately:

12–14 CM

This means Trimacs can become reproductively active:

WELL BEFORE REACHING FULL ADULT SIZE

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👨‍👩‍👧 Biparental Care

Both parents normally participate in brood defense.

The pair may:

• Guard the eggs
• Fan the eggs
• Defend the spawning site
• Move larvae
• Guard free-swimming fry

Their aggression increases dramatically during this period.

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🚨 Breeding Pairs Can Be Extremely Dangerous to Each Other

The greatest problem when breeding Trimacs is often:

MALE-TO-FEMALE AGGRESSION

A male can seriously injure or kill a female.

This can happen:

• Before spawning
• After spawning
• After fry become free swimming
• If the female is no longer receptive

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🛡️ Use a Divider

Anyone attempting to breed Trimacs should have:

A STRONG AQUARIUM DIVIDER READY

The divider should be sturdy enough that a large male cannot:

• Push through it
• Knock it loose
• Jump around it

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🏠 Pair Aquarium

A permanent adult pair should have substantially more room than a single specimen.

For a large mature pair:

180–240+ GALLONS

is a much more appropriate starting point than a small breeding aquarium.

Even then:

COMPATIBILITY IS NEVER GUARANTEED

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🐣 Raising Fry

Once free swimming, Trimac fry can usually accept:

• Baby brine shrimp
• Fine quality cichlid foods
• Crushed pellets
• Small prepared fry foods

Growth can be rapid when:

• Fed well
• Kept warm
• Maintained in clean water

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⚠️ Plan Before Raising Hundreds of Fry

A successful pair can potentially produce:

HUNDREDS TO MORE THAN 1,000 YOUNG

Before intentionally breeding Trimacs, consider whether there is adequate space to:

• Grow the fry
• Separate aggressive juveniles
• Feed them
• Maintain water quality
• Find appropriate permanent homes

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🧬 Flowerhorn Connection

The Trimac is historically important in the development of:

FLOWERHORN CICHLIDS

and has been used in hybrid breeding because of characteristics such as:

• Body shape
• Red coloration
• Black flower-line markings
• Aggressive behavior
• Head development

However:

A PURE TRIMAC IS NOT A FLOWERHORN

Pure Amphilophus trimaculatus should remain clearly identified as the natural species.

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🚨 Protect Pure Trimac Bloodlines

Do not intentionally cross pure Trimacs with:

• Flowerhorns
• Midas cichlids
• Red Devils
• Other Amphilophus
• Texas cichlids
• Other hybrid cichlids

and later sell the offspring as:

PURE TRIMAC

Any hybrid offspring should be clearly labeled as hybrids.

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🧬 Pure Species vs. Hybrid

This product should represent:

Amphilophus trimaculatus

not:

• Flowerhorn
• Trimac hybrid
• Midevil
• Red Devil hybrid

Maintaining accurate species identification is especially important because Trimac ancestry has historically been incorporated into several hybrid lines.

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🌎 Conservation Status

Amphilophus trimaculatus is currently assessed as:

LEAST CONCERN

The assessment dates to:

2018

This means the species is not presently classified globally as:

• Vulnerable
• Endangered
• Critically Endangered

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🌎 Invasive-Species Responsibility

Trimacs have been introduced outside their native Central American range.

Large, aggressive cichlids should never be:

• Released
• Dumped
• Placed in local ponds
• Placed in canals
• Released into rivers

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🚨 Never Release Aquarium Fish

If permanent housing becomes impossible:

• Rehome the fish
• Contact an aquarium store
• Find an experienced large-cichlid keeper
• Contact an aquatic rescue where available

NEVER RELEASE A TRIMAC INTO NATURAL WATERWAYS.

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🩹 Current Specimen Note

The current listing specimen is approximately:

7–8 INCHES

The fish appears to have had:

A PRIOR HEALED INJURY ON ITS SIDE

The injury appears healed, but the visible area may remain noticeable.

Customers purchasing individual large fish should review all available:

• Photos
• Videos
• Product information

before ordering.

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⭐ Why Keep a Trimac?

The Trimac combines:

• 🔥 Intense yellow, gold, and red coloration
• ⚫ Famous three-spot pattern
• 👁️ Brilliant red eyes
• ✨ Green and turquoise iridescence
• 🧠 Intelligent interactive behavior
• 💪 Powerful adult body
• ♂️ Potential male nuchal hump
• 📏 14–16+ inch male potential
• 🥚 Fascinating biparental breeding behavior
• 🌎 True Central American species identity
• 🧬 Historical importance in Flowerhorn development

into one of the most impressive aggressive cichlids available to experienced keepers.

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⚠️ Important Considerations

Before purchasing a Trimac Cichlid:

• The accepted scientific name is Amphilophus trimaculatus.
• The species name should be lowercase: trimaculatus.
• Older references may use Cichlasoma trimaculatum.
• The native range is the Pacific slope of Mexico, Guatemala, and El Salvador.
• Do not list Belize as part of the accepted native range.
• The species inhabits slower lower-river environments with mud, sand, roots, and vegetation.
• The current listing fish is approximately 7–8 inches.
• The current specimen has a prior healed injury visible on its side.
• Large males are scientifically documented at 36.5 cm standard length before the tail.
• Plan for approximately 14–16+ inches for a large adult male.
• Females remain substantially smaller.
• Do not use 75 gallons as the preferred permanent adult recommendation.
• Provide approximately 125 gallons or larger for one adult.
• 150–180+ gallons is preferred for especially large males.
• A 6-foot or longer aquarium is strongly recommended.
• Trimacs are highly aggressive and territorial.
• Solo housing is safest.
• Tankmate compatibility is never guaranteed.
• Expect major digging and rearranging.
• Secure all heavy rocks and décor.
• Maintain approximately 75–82°F.
• Maintain pH approximately 6.5–8.0.
• Maintain ammonia and nitrite at zero.
• Provide powerful filtration.
• Feed a protein-oriented, varied cichlid diet.
• Natural foods include small fish, macroinvertebrates, and insects.
• Live feeder fish are unnecessary.
• Avoid chronic overfeeding.
• Trimacs are open-substrate spawners.
• Large females can produce more than 1,000 eggs.
• Both parents defend the brood.
• Male aggression toward females can be severe or fatal.
• Always have a strong divider available when breeding.
• Pure Trimacs should not be mislabeled Flowerhorns.
• Hybrid offspring must be clearly identified as hybrids.
• The species is currently Least Concern.
• Never release aquarium fish into natural waterways.

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🧬 Taxonomy

The currently accepted scientific name is:

Amphilophus trimaculatus (Günther, 1867)

Classification:

• Order: Cichliformes
• Family: Cichlidae
• Genus: Amphilophus
• Species: trimaculatus

Original scientific name:

Heros trimaculatus

Historical aquarium combinations include:

• Cichlasoma trimaculatum
• Cichlasoma trimaculatus
• Amphilophus trimaculatum

For this product, use:

Trimac Cichlid / Three Spot Cichlid – (Amphilophus trimaculatus)

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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

Larger Trimacs 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

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 Amphilophus trimaculatus may legally be purchased, possessed, transported, and received in their state or local jurisdiction before ordering.

Never release aquarium fish into natural waterways.