Cobalt blue cichlid

Maylandia callainos

Also known as Cobalt zebra cichlid, Cobalt blue zebra, Cobalt zebra, Pearl zebra, Pearl zebra cichlid, White pearl zebra, OB callainos, Maylandia callainos OB, Metriaclima callainos

FreshwaterFish

Care at a glance

Temperature
75–82°F
24–28°C
pH
7.5–8.5
Adult size
5.1 in
13 cm
Minimum tank
45 gal
170 L
Temperament
Aggressive
Social behavior
Social
Own kind
One male per tank
Tankmates
With caution
Swim level
Middle
Difficulty
Medium
Breeding
Hard
Rarity
Rare
Family
Cichlidae
Origin
Lake Malawi

Overview

Expect aggression and plan around it. Keep one male with several females in a tank of at least 170 liters, packed with rock to break up territories. In the lake it grazes algae off rocks, so its diet should lean vegetable, with a quality cichlid pellet plus spirulina and only occasional protein foods. Too much meaty food causes digestive trouble in mbuna, so go easy there.

In the wild

The cobalt blue cichlid is a Lake Malawi mbuna that lives along rocky shores in clear, hard, alkaline water. It needs that same setup in the tank, so build up rockwork with caves and crevices for territory and shelter. Keep the pH high, around 7.5 to 8.5, and the temperature in the mid to high 20s C to match the lake.

Good to know

This is Maylandia callainos, in the family Cichlidae, reaching about 13 cm. It is a maternal mouthbrooder, with the female holding the eggs and fry in her mouth until they are free-swimming. Both sexes carry the blue color, which is unusual since in many mbuna only the males are bright.

Did you know

These fish can shift their shade depending on mood and dominance, darkening or paling as they square off over territory. A dominant male holding court usually shows the deepest, most even blue.

Common questions

What size tank does a Cobalt blue cichlid need?

A Cobalt blue cichlid needs at least 45 gal (170 L). It spends most of its time in the middle.

What temperature and pH does a Cobalt blue cichlid need?

A Cobalt blue cichlid is comfortable at 75–82°F (24–28°C) with a pH of 7.5–8.5.

How big does a Cobalt blue cichlid get?

An adult Cobalt blue cichlid reaches about 5.1 in (13 cm).

Related species