Black Moor Goldfish Care Guide: Diet, Breeding & More

Black Moor Goldfish portrait

The Black Moor Goldfish is a very interesting species of fish with a lot of unique characteristics. 

It is important that you learn as much as possible about these fish before getting one. While it is easy to take care of these goldfish, you’ll still need to learn the basics beforehand.

Black Moor Goldfish Appearance

As the name suggests, these goldfish are completely black. There are some that sport small dark orange patches, but they are entirely black for the most part. Juveniles have a lighter black coloration, which gets progressively darker over time.

The large bulging eyes that these fish are also known for get bigger as they get older as well. Despite the sheer size of their eyes, they don’t actually have very good vision. Both the pectoral and dorsal fins on these fish are notably large as well.

It can be difficult to tell the difference between males and females. The males do tend to be a little smaller than the females, which can help with sexing.


These goldfish have a reputation for being very peaceful and docile overall. They swim as a leisurely pace, as opposed to jetting around like some other species. You can expect your fish to spend a good amount of time near the bottom of the tank. Their timid nature means that they tend to hide a lot, especially if they are co-existing with other fish.

Natural Habitat

There isn’t really a natural habitat for Black Moor Goldfish, as they are the result of selective breeding. They are descendent from Asian Carps, which tend to be found in large rivers and lakes with slow-moving water.

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Black Moor Goldfish Care Guide

1. Tank Setup

These fish need to be kept in a minimum 20 gallon tank. While they are fairly calm and swim slowly, they do have fairly large bodies. You will therefore need to make certain that your fish have enough space to swim around without feeling overly restricted. You should never put your goldfish in a bowl. Despite popular belief, this is not an adequate or healthy environment for keeping any fish.

You will absolutely need to provide your goldfish with numerous hiding spots. This includes caves and plenty of vegetation. It is especially important if you are going to keep them with other fish. They are fairly timid and will likely need a place to get away and hide out once in a while.

You can use gravel or sand for the substrate. The material you choose won’t matter all that much, as these fish don’t spend much time at the bottom of the tank.

2. Water Conditions

The temperature of your goldfish’s tank should be kept within a range of 50 to 75 degrees Fahrenheit, and a pH level of 6.5 to 7.5. These fish are fairly sturdy, but you’ll still need to respect these restrictions when it comes to the water conditions.

It is best to avoid filters that are too powerful, as these fish prefer slow moving water. It is a good idea to throw some wood and rocks in the tank as well. This will help give it a nice overall aesthetic.

3. Black Moor Goldfish Tank Mates

When you are searching for suitable tank mates for your black moor goldfish, you’ll want to focus on species that also swim around slowly and have a docile nature. You don’t want to put in any fish that are larger or more aggressive. Some of the best tank mate options for these fish include Cherry Barbs, Mollies, and Neon Tetras.

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4. Black Moor Goldfish Food

Many people who keep these goldfish feed them flakes or pellets on a daily basis. It’s also a good idea to give your fish some live food like insect larvae and tadpoles. A well-rounded diet is one of the most important aspects of keeping your fish happy and healthy.

Make sure that you focus on getting the best quality food for your fish, as they sometimes have digestive issues. You will also be able to give them brine shrimp, bloodworms, and daphnia. These foods can be given to them frozen or live—it doesn’t really matter.

Common Health Problems

Tail and fin rot can become a real problem with black moor goldfish. This is a result of a bacterial infection, which can have numerous causes. The most common explanation for this particular issue is an unclean tank. This is precisely why you will need to make a point of keeping your aquarium clean. These fish are also prone to fungal infections, which can be deadly.

Black Moor Goldfish Breeding

You really don’t need a lot of knowledge or experience to successfully breed these goldfish. You will, however, need to create an ideal environment that facilitates spawning. You’ll want to slowly increase the temperature of the water by a few degrees every single day, up to 75 degrees Fahrenheit.

Make sure that you take the parents out of the breeding tank once the eggs have been laid. This will keep the eggs from getting eaten. You should feed their offspring small food that contains a lot of protein and iron.


  • Black Moor Goldfish are entirely black, though some of them have small areas of orange.
  • It can be difference to tell the difference between the genders, but females tend to be a bit larger overall.
  • These fish are known for being peaceful and docile with no aggressive tendencies at all.
  • You will need a minimum 20 gallon tank for keeping these fish. Their large bodies require a good amount of space.
  • They tend to spend much of their time in the middle and top sections of the tank, swimming along at a slow pace.
  • Keep the water in the tank within a range of 50 to 75 degrees Fahrenheit.
  • Cherry Barbs and Neon Tetras both make great tank mates for these fish.
  • You should give your black moors a combination of dry flake or pellet food, as well as live or frozen foods.
  • If you decide to breed these fish, you’ll need to get the temperature of the water just right by slowly increasing it each day.
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