Blue dolphin moorii Cyrtocara moorii (earlier named Haplochromis moorii) is an unusual tank fish which came from Malawi Lake in Africa.
Blue moorii is rather popular among cichlid-fans first of all due to its bright-blue color and also to its unusual body shape with a big bump on the fish head.
At that moorii blue dolphin cichlid isn’t a small fish at all. H. moorii max size can be 25 cm and longer. They are peaceful enough, but males can be rather aggressive to each other and it’s better to keep them in a harem consisting of one male and 3-4 females.
Such a harem inhabits in its own territory which is thoroughly guarded only during the spawning period. However, during the rest of time blue dolphin is more tolerate.
Keeping in a tank is rather easy under the condition that they live in a spacious aquarium with clean water that has stable parameters and the aquarium is designed appropriately.
It’s better to design it as a biotop with a sandy bottom that has a big number of rocks and different covers which leave enough space for the fish to swim.
Habitation in the wild
Malawi blue dolphin cichlid was discovered and described by Boulanger in 1902. African Malawi Lake endemic is rather spread through all the lake. It can be seen in the coastal regions 3-15 meters deep, it inhabits in the coastal biotops with sandy bottom and performs feeding migrations along the coastline.
Н. moorii forms stable multiple aged and intergroup communities. In the wild usually one male takes a dominant position and the rest of the fish has a dependent position.
There are some evidences that Н. moorii used to join some other fish species with alike habits and they used to feed together.
Blue dolphin cichlid is a big fish with elongated body and with a head somehow reminding a dolphin that’s how the fish got its name. Body is elongated and stocky with a hump on its head and its snout is a bit pointed.
Body color is blue with different number of black spots on the fins depending on the cichlid habitat. When becoming older both males and females develop so called lump (also referred to as nuchal bump or hump) on their forehead.
When the fish skirmish their fins and neck color changes up to almost black and the body color changes to bright blue. The cichlid max size can be up to 25 cm sometimes even more and it can live to about 10 years.
Difficulties in care
Blue dolphin is a fish to be recommended both to experienced and advanced aquarists. The fish isn’t the one for amateurs since it requires a spacious tank, frequent water renew and correctly chosen tankmates.
Although the fish is rather peaceful they aren’t good for a community tank. The best tankmates are some other Malawi fish types or african catfishes.
As for the feeding type Н. Moorii is closer to benthos feeders, but it doesn’t have a strict specialization in feed. Along with worms of benthic spineless the blue dolphin fish also feeds on organic debris, different kinds of drifting life and soft supreme phreatophyte.
In the tank blue dolphin eats all types of feed – artificial, live, frozen, plant one. But the feed should have high contain of proteins, for example, blood worms or brine shrimp, earthworms.
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Blue dolphin cichlid has a specific manner of behavior: it’s not fussy and its movements are slow. In Malawi Lake water parameters change insignificantly, plus the water is very hard and it has alkali reaction. Optimal parameters for this fish keeping are the following: ph 7.2-8.8, 10 – 18 dGH, the temperature 24-27С. Trace element and Cichlid Lake Salt can also be added.
It’s a rather quiet cichlid, but the fish is sure not for the community tank. They are good tank mates for with the fish of equal size, but smaller fish is treated only as feed.
Moori dolphin cichlid can inhabit together with other Malawi fishes, but it’s desirable to avoid mbuna, because its very aggressive and disquiet.
The hump gradually develops on the forehead of cichlid males and females. Males are more often larger and brighter. It’s easier to distinguish a dolphin cichlid male from female by its indicative vertical stripes the number of which varies from 4 to 7 stripes.
The female can have several black marks on its body instead of the stripes. Also this cichlid male fluke is blue and the female one has red marks on it. With the age dolphin cichlid fish male forehead becomes yellowish.
They are polygamous, they create a family consisting of a male and several females. There can be 3-6 females for one blue dolphin male. Since the gender of a dolphin fish is difficult to be defined, the best way is to create a harem of 10 juveniles and grow them together.
The juveniles become reproductive when reaching the body length 12-15cm and then they should be separated. Water parameters for breeding are the following: hardness 5 -20°, рН 7.5-9.0, temperature 25 – 28°С. The fish couple takes part in spawning.
Male becomes rather aggressive when protecting its territory, as for the female it becomes timid (when it gets scared it can swallow the eggs) therefore it should be protected from stress.
The female breeds on a flat rock or into the hole dug by the male in advance, or just on the bottom. The female breeds 1-3 eggs in a time, then she takes them into her mouth and gets to the male anal fin to fertilize them. The fruitfulness of the couple is from 20 to 90 eggs.
The female carries eggs in its mouth for 21 days. During this period the female doesn’t eat a thing and it can get weak, therefore some aquarists try to grow the eggs in an incubator. To do so they take a spawned-out fish female and release the eggs from her mouth.
They put the eggs into the tank with clean water, soft lights and water passage. The water should have the same parameters that the one in the big tank. On the 7th day the juveniles start going outside and feed, but hey hide back into the female mouth with the slightest sign of danger or for the night time. Start feed is brine shrimp eggs.
The juveniles from the beginning are silver colored with black stripes and than when reaching 4-5 cm in size they become blue and grow very slowly.