Skip to content
Menu

Species profile

Checkerboard Cichlid

Dicrossus filamentosus

Common names: Checkerboard Cichlid, Lyretail Checkerboard Cichlid

Recognized speciesCichlids
Checkerboard Cichlid (Dicrossus filamentosus)

Adult size

Up to 9 cm

Typical adult length 5–9 cm.

Up to 9 cm

Countries of origin

  • See all stock from Brazil
  • See all stock from Colombia
  • See all stock from Venezuela

Good fit for your tank?

Good fit for

  • Mature planted aquarium setups
  • Advanced shrimp keepers

Think carefully if

  • The aquarium contains shrimp-eating fish
  • The tank is newly cycled
  • Water conditions change frequently

A delicate Rio Negro dwarf cichlid with a checkerboard flank pattern and demanding soft-acidic water requirements.

Appearance and Identification

A slender fish with alternating dark flank blocks, blue iridescence, and long filamentous caudal extensions in adult males.

Adult male caudal filaments help distinguish it from D. maculatus. Females develop red pelvic fins and strong brood colour.

Males are larger with more blue iridescence and elongated lyre-like caudal extensions. Females are smaller and develop red pelvic fins and yellow brood colour.

Tank Requirements

Suggested filter
About 160–240 litres an hour
Suggested heater
About 75–125 W for this tank
Minimum tank volume
80 litres
Minimum tank length
75 cm
Minimum group size
3
Recommended group size
4
Activity level
Moderate
Flow preference
Low
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Use fine sand, abundant leaf litter, branches, plants, dim light, and broad leaves or smooth surfaces for spawning. Keep one male with several females in adequate floor space.

Behaviour and Tankmates

A shy lower-level dwarf cichlid that becomes territorial during courtship and brood care.

A small harem can work in a structured aquarium, with each female controlling a separate area.

Females guard spawning sites and fry. Males display across a wider area but need escape routes from brooding females.

Use tiny peaceful upper-water fish only. Avoid aggressive tank mates, intrusive bottom dwellers, and ornamental shrimp.

Check tankmates for this species

Water Parameters

Temperature
26–30 °C
pH
3.8–6
GH
0–4
KH
0–2
TDS
10–90
Stability importance
Critical

Very soft acidic blackwater is strongly preferred and is usually necessary for dependable egg development.

Parameter caveat
Low-buffer water must be managed carefully. Avoid large chemistry swings and maintain excellent sanitation without stripping the aquarium of all botanicals.

Feeding

Diet types
Carnivore, Insectivore
Feeding frequency
Daily
Preferred foods
  • Live baby brine shrimpUseful for conditioning adults and feeding juveniles; rinse before use.
  • Daphnia, cyclops, or mosquito larvaeSmall moving prey encourages natural feeding behaviour.
  • Frozen brine shrimp or mysisOffer thawed portions sized for the fish.
  • High-quality cichlid micro-pelletUse as part of a varied diet after the fish accepts prepared food.

A micropredator feeding on tiny crustaceans, worms, insect larvae, and similar items.

Live and frozen foods are often needed. Feed small portions and prevent waste in the warm acidic aquarium.

Breeding

Breeding type
Egg Layer, Substrate Spawner
Breeding difficulty
Difficult
Breeding temperature
28 °C
Breeding pH
5
Brood or egg count
Commonly 50 to 120 eggs.
Incubation
3 days
Parental care
Maternal care
Baby foods
  • Newly hatched brine shrimpPrimary food for free-swimming fry; feed small rinsed portions several times daily.
  • MicrowormsUseful supplementary food for small fry near the substrate.
  • Fine powdered fry foodUse sparingly and remove uneaten material.

A maternal open substrate spawner. The female places eggs on a leaf or smooth surface and guards eggs, larvae, and fry.

Habitat and Origin

Geographic origin
Amazon Basin, Brazil, Colombia, South America, Venezuela
Natural habitat
Blackwater, Floodplain, Freshwater Stream
Aquarium contexts
Breeding Aquarium, Freshwater Aquarium, Planted Aquarium, Species-Only Aquarium
Audience level
Advanced

Classification

Profile type
Recognized species
Genus
Dicrossus
Family
Cichlidae
Species group
Cichlids, Fish, South American Cichlids

Have you kept this species?

You can write a note about what worked for you, or send a photograph. We check everything before it appears here.

Share a note or photo

JPG, PNG, or WebP, up to 5 MB.