Above: In this picture a young premium quality Black Altolamprologus Calvus was swimming in one of our aquariums, when one of us snapped this picture.
This Black Calvus is Wild and was collected from Lake Tanganyika.
Comments: When they're mature, these fish have dark black bodies with faint black vertical bars.
Origin: This fish lived in Lake Tanganyika. But Calvus live in aquariums all over the world.
Maximum Size: In aquariums, males can grow to be about 5" long, including their tails, which is a nice big size for aquariums with 80-gallons of water or more.
Females tend to remain a little smaller in the range of about 3.5" to 4" long, including their tails.
Behaviors: Black Calvus are usually rather aggressive fish, and may attack and harass less aggressive fish. Males are sometimes mean to females.
Compatibility: Some recommended tank mates include, Malawi Peacocks, mild tempered Mbunas like the Lemon Yellow Mbuna, and Synodontis Catfish, but not most Mbunas from Lake Malawi, and not most other Cichlids from Lake Victoria.
Click here for more about Synodontis Catfish.
Click here to read more about compatible groups of pet fish.
Feeding: Premium Fish Food Pellets is the best food for these Cichlids to eat.
It's best to feed them small pellets, when they're small, then gradually increase the size of the pellets, as they grow larger.
In their natural habitat Black Calvus eat invertebrates, crustaceans, small shrimps, and small fish but do not require live fish when living in an aquarium.
Click here to learn more about and shop online for premium fish foods.
Water Conditions: These fish do best in water with a pH of 8+ and very high hardness.
Most the water in the US has a lower pH and is not as hard but these fish can adapt to most water down to a pH of 7.5 with less hardness, and so as usual it's best not to try to change the pH or alkalinity.
Click here for a lot more information about aquarium water conditions.
Aquarium Size: Black Calvus will eventually need to live in an aquarium with at least 80-gallons of water.
Each Cichlid will need at least 6-gallons of water, and Black Calvus live best in an aquarium with some other compatible Cichlids of about the same size.
They like a couple of piles of aquarium-safe rocks.
Better is a 120, 150, or 200-gallon aquarium with as many Penguin 350B Filters as will fit across the back.
Click here to learn more about aquarium filters.
The addition of Lava Rocks will keep nitrates in the ideal range. Click here to learn more about using Lava Rocks in aquariums.
Life Span: Black Calvus can live for several years.
Keep the water conditions excellent and feed them premium foods, and they'll most likely breed and produce the next generation of fish for your aquarium.
Gender: Males usually display bolder and brighter colors as they mature. Females usually have somewhat duller colors, and smaller bodies.
Breeding: Black Calvus are Substrate Spawners.
Click here for a lot more about breeding various tropical fish in aquariums.
Names: Their scientific name for Black Calvus is Altolamprologus calvus.
Variations: There are many variations with different colors.
We hope you've enjoyed reading these comments.
DrTom - 11/02/2015
We have 380-aquariums with lots-and-lots of popular aquarium fish plus lots-and-lots of rare fish!
We consider ourselves to be the link between the world's best sources of fish and the world best customers. We love our work, and we are very responsible.
All of our fish are Premium Quality Fish from the best suppliers in the world. Our fish have better health, more energy and brighter colors, as you can see in our pictures on this website.
We also offer lots and lots of information about keeping pet fish, all from the knowledge of the Bailey Brothers, who have a combined total of 100+ years of experience as breeders, wholesalers, and retailers of pet fish!
Our fish and our customers are treated with the best of care, and we work energetically everyday to make sure every customer enjoys their new fishy friends.
When you purchase pet fish from us, you know you're receiving premium quality fish and premium quality service.
"Received my fish last night and was so pleased! They all arrived alive and appeared to be healthy.
"Once in the tank, they became very active and are now thriving in their new home.
"Beautiful fish, I asked for color and aquariumfish delivered. Processing and shipping was extremely quick."
Nevin and DrTom, the Bailey Brothers
This website is owned and operated by the Bailey Brothers, DrTom and Nevin, who've been together in the fish business for more than 50-years.
The Product Manager has been with the company for more than 35-years.
So we feel very confident that this is the fishiest crew anywhere.