Save 10% on Live Fish at The Wet Spot with code: steenfott10

Spadetail Checkerboard Cichlid: A Comprehensive Guide (Dicrossus maculatus)

The Spadetail Checkerboard Cichlid (Dicrossus maculatus) is a beautiful and highly specialized dwarf cichlid from the Amazon basin. Known for its intricate pattern of spots and subtle checkerboard markings, this species is closely related to the more familiar Dicrossus filamentosus, but it remains much less common in the aquarium hobby.

While its delicate appearance and small size make it attractive to many aquarists, Dicrossus maculatus is not considered a beginner fish. This species requires soft, acidic water and stable conditions that closely replicate its natural environment. Because of these specific requirements, it is best suited for experienced aquarists who are comfortable maintaining blackwater aquariums.

For hobbyists willing to provide the proper setup, the Spotted Checkerboard Cichlid is an incredibly rewarding species that displays fascinating behavior and subtle beauty.

Natural Distribution & Habitat

Dicrossus maculatus is native to the Amazon basin, with populations documented in Brazilian tributaries associated with blackwater river systems, including areas connected to the Rio Negro drainage.

Its natural habitat typically consists of:

  • Blackwater forest streams

  • Slow-moving tributaries

  • Flooded forest areas

  • Leaf litter–covered substrates

These environments are characterized by:

  • Very soft, acidic water

  • Heavy tannin staining

  • Dense leaf litter and submerged branches

  • Dim lighting due to rainforest canopy

In these habitats, the fish spend much of their time near the substrate, searching through leaf litter and sand for small invertebrates.

Because of these conditions, aquariums that replicate blackwater environments with botanicals and soft substrates tend to produce the best results when keeping this species.

Size

The Spadetail Checkerboard Cichlid remains a small dwarf cichlid.

Typical adult size:

  • Length: 2–2.5 inches (5–6 cm)

Males are typically slightly larger than females and may develop more elongated fins.

Aquarium Care

Dicrossus maculatus thrives in aquariums designed to replicate soft, tannin-rich Amazonian environments.

Recommended aquarium setup:

  • Tank size: 20 gallons minimum for a pair

  • Aquascape: Sand substrate with leaf litter, driftwood, and plants

  • Substrate: Fine sand is strongly recommended

  • Lighting: Low to moderate lighting

Aquariums that include botanicals such as catappa leaves, seed pods, and driftwood help recreate their natural habitat and provide important microfauna that the fish will forage on.

Dense planting with species such as Amazon swords, Cryptocoryne, and floating plants can also help create shaded areas.

Stable water quality is critical for this species.

Water Parameters

This is one of the most important factors when keeping Dicrossus maculatus successfully.

Recommended parameters:

  • Temperature: 75–82°F (24–28°C)

  • pH: 4.5–6.5 preferred

  • Hardness: Very soft water (0–5 dGH)

Because this species originates from extremely soft blackwater environments, it may struggle in hard or alkaline water.

Aquarists often use RO or reverse osmosis water mixed with botanicals to maintain the appropriate conditions.

Diet

In the wild, Dicrossus maculatus feeds on small invertebrates found in leaf litter and sand.

In the aquarium they do best with:

  • Frozen foods such as bloodworms and brine shrimp

  • Live foods such as baby brine shrimp, microworms, and daphnia

  • Small high-quality micro pellets

Because they are methodical feeders, they may be outcompeted by very fast fish.

Offering a varied diet helps maintain good health and encourages natural behavior.

Behavior & Tank Mates

Spadetail Checkerboard Cichlids are generally peaceful but somewhat shy.

Suitable tank mates include:

  • Small tetras

  • Pencilfish

  • Corydoras catfish

  • Other peaceful Amazonian species

They spend much of their time near the lower regions of the aquarium, searching through the substrate for food.

Unlike some dwarf cichlids, they are not highly aggressive but may show territorial behavior during breeding.

Breeding

Dicrossus maculatus is a substrate-spawning dwarf cichlid.

During breeding:

  • The female selects a site among leaf litter or a flat surface

  • Eggs are deposited on the substrate or inside sheltered areas

  • The female typically guards the eggs and fry

Once the eggs hatch, the female may lead the fry around the aquarium while they feed on microscopic organisms.

Because of their sensitivity to water conditions, successful breeding usually occurs only in very soft and acidic water.

Why This Is Not a Beginner Fish

While its small size may make it appear beginner-friendly, Dicrossus maculatus has several characteristics that make it better suited to experienced aquarists.

It requires very soft water.
Many tap water supplies are too hard or alkaline for this species.

Stable water chemistry is critical.
Sudden changes in water parameters can stress these fish.

They prefer blackwater-style aquariums.
Replicating their natural environment often requires botanicals, leaf litter, and careful water preparation.

They can be sensitive to poor water quality.
Consistent maintenance and good filtration are important.

Because of these factors, aquarists who already have experience with blackwater setups or sensitive dwarf cichlids tend to have the most success with this species.

Fun Facts & Interesting Quirks

The Spadetail Checkerboard Cichlid has several interesting traits.

They sift through sand constantly.
These fish frequently pick up mouthfuls of sand and sift it to find tiny food items.

Their pattern changes with mood.
Their markings can become darker or lighter depending on stress levels, dominance, or breeding activity.

They are excellent parents.
Like many dwarf cichlids, females often display attentive parental care toward eggs and fry.

They thrive in natural aquariums.
Blackwater aquascapes with botanicals and leaf litter often bring out their best behavior.

Why Aquarists Love Them

Despite their specialized care requirements, Dicrossus maculatus is highly prized among dwarf cichlid enthusiasts.

Reasons hobbyists appreciate this species include:

  • Unique spotted checkerboard pattern

  • Fascinating natural behaviors

  • Interesting substrate-sifting feeding style

  • Strong parental care when breeding

  • Ideal fish for blackwater aquariums

For experienced aquarists interested in rare Amazonian dwarf cichlids, the Spotted Checkerboard Cichlid can be an incredibly rewarding species to keep.

Looking to Add Fish to Your Aquarium?

If you're looking to add new fish to your aquarium, we recommend purchasing from trusted retailers known for their healthy livestock and excellent selection. The Wet Spot Tropical Fish has one of the best selections of rare and high-quality freshwater fish in the hobby, with excellent shipping and consistently healthy stock. Moonlight Aquatics is another fantastic source, especially for uncommon species and great prices on unique fish you don’t see everywhere. If you’re looking to add shrimp to your tanks, Buy Pet Shrimp specializes in hardy, well-bred freshwater shrimp that ship safely and arrive in great condition.

Use our affiliate links and discount codes to save a little:

The Wet Spot Tropical Fish
https://geni.us/WCZYWC
Use code steenfott10 for 10% off

Moonlight Aquatics
https://geni.us/pAFf1s
Use code steenfott10 for 10% off

Buy Pet Shrimp
https://geni.us/RNkIQpf
Use code steenfott5 for 5% off

Your support helps us continue creating guides and content for the aquarium hobby.

Cichlid Fish: The Ultimate Guide to the Family Cichlidae

 

Back to Care Guides