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Fish Freshwater Care: easy Peaceful

African Butterfly Cichlid

Anomalochromis thomasi
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Other names: Thomasi, Anomalochromis thomasi, Paratilapia thomasi, Pelmatochromis thomasi, Hemichromis thomasi
Group: Dwarf cichlids · Family: Cichlidae · Origin: West Africa — forest streams of Guinea, Sierra Leone and Liberia

One of the most peaceful cichlids, adorned with dark bars on its body, a black spot in the middle and rows of shining blue-green spots. It spawns on a flat stone; the pair care for their fry together.

Will it suit my tank?

Last updated October 16, 2026

Temperature
23–27°C
pH
6–7.5
Hardness
2–12 dGH
Adult size
7 cm
Minimum tank size
80 liters
Social structure
Pair
Group
at least 2
Male–female ratio
1 erkek : 1 dişi
Swimming zone
Bottom
Diet
Omnivore
Breeding
Substrate spawner

Water parameters

Temperature23–27°C
pH6–7.5
General hardness (GH)2–12 dGH
Recommended range
Eats shrimp Suitable for planted tanks

Overview

October 16, 2026 · Suggest an edit

The African butterfly cichlid is the only species in its genus. Its pale beige–gold body carries dark vertical bars, a large black spot in the middle of the flank and shining blue–green dots lined up along its scales. Juveniles look plain; adults become increasingly colorful once settled in the aquarium.

It is one of the most peaceful species among cichlids; it causes almost no trouble in a community aquarium. Its ability to adapt to both slightly acidic and slightly alkaline water makes it a good choice for getting started with African dwarf cichlids. Some regional forms are thought likely to be described as separate species in the future.

Natural Habitat

October 16, 2026 · Suggest an edit

It lives in Guinea, Sierra Leone and Liberia, in forest streams covered over by vegetation. These waters are tea-colored from tannins, soft and slightly acidic; the bottom is covered with leaves and branches.

Tank Setup

October 16, 2026 · Suggest an edit
  • Volume: at least 80 liters for a pair.
  • Decor: flat stones and broad-leaved plants (spawning surfaces), roots, plenty of hiding places; dim light.
  • Substrate: fine sand; the parents dig pits during the fry period.
  • Water: 24–26°C, pH 6–7.5. A 25% water change every week.

Diet

October 16, 2026 · Suggest an edit

Omnivorous and not fussy. A quality cichlid granule can be the staple; vary the diet regularly with frozen bloodworms, brine shrimp, daphnia and mysis.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Shy and peaceful; it defends its spawning site only during breeding. It hides in crowded, busy aquariums and shows itself in a calm setting. It may eat shrimplets and adult dwarf shrimp.

Good companions: small tetras and African characins, rasboras, Corydoras, small gouramis, other peaceful dwarf cichlids (with enough space).

Avoid: aggressive and large cichlids, fast and domineering barbs, shrimp.

Group and Colony Structure

October 16, 2026 · Suggest an edit

Kept as a pair. Buying a bonded pair or growing up several juveniles together is the best approach. In a large aquarium (150 liters or more) a group of 6 or more can also be kept; in that case the fish behave more boldly and pairs split off their own territories.

Breeding

October 16, 2026 · Suggest an edit

It is an open-substrate spawner: the female cleans several flat stones or broad leaves, and the pair choose one of them. The female lays eggs in rows and the male fertilizes them; up to 500 eggs can be seen in a single spawning. The eggs hatch in about 2 days; the larvae are moved between sand pits dug by the parents and become free-swimming after about 3 days. The parents care for the fry together for about a month. The fry grow slowly and are fed newly hatched brine shrimp.

Health and Common Problems

October 16, 2026 · Suggest an edit

Hardy. Bacterial infections can occur in dirty water; with regular water changes and a varied diet, problems are rare.

Sexing

October 16, 2026 · Suggest an edit

Sexing is difficult. Males are slightly larger with longer fins; their black markings may be paler than the females'. When females are full of eggs, their bellies become noticeably rounder.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Usually compatible

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026