Black Moor Goldfish (Medium)
The domestic Goldfish is one of the most popular fish kept today, and also one of the very first to be kept indoors. Contrary to dated belief, goldfish cannot be kept in tiny, unfiltered bowls. They should get quite large (about the size of a sweet potato) and live for decades. These are intelligent fish that will come to recognize their owners; the idea that their memory span is only 3 minutes has been disproven by multiple scientific studies. An ideal environment for goldfish is a 30-40 gallon tank with at least 2-3 goldfish, and nice strong filtration.
Telescope-Eye goldfish are known for their large protruding eyeballs. The black morph specifically is usually referred to as a “Moor”, and all other colours simply as telescopes. These individuals are around 2.5″ long.
Specifications
| Feature | Detail |
|---|---|
| Species | Black Moor Goldfish |
| Size (adult) | 2.5 inches |
| Origin | Domesticated |
| Lifespan | Decades |
| Water Temperature | 65-77°F |
FAQ
What is the ideal tank size for keeping Black Moor Goldfish?
An ideal tank size for Black Moor Goldfish is 30 to 40 gallons with proper filtration and at least 2-3 fish to ensure healthy social interaction.
Are Black Moor Goldfish intelligent?
Yes, Black Moor Goldfish are intelligent and can recognize their owners. Scientific studies have shown they have a memory span far longer than the commonly believed three minutes.
How long do Black Moor Goldfish typically live?
Black Moor Goldfish can live for decades with proper care, including a stable environment, clean water, and appropriate tank size.

Diana MacLeod –
My Black Moor Goldfish has been in the tank for six months and is very active. It recognizes me and swims toward the surface when I approach. The tank is now 35 gallons with good filtration and it’s thriving.
Bernadette Morgan –
The fish looks beautiful with its dark body and large eyes. I was worried about the size, but it’s only grown to 2.5 inches and is healthy. I keep it with two other goldfish and they get along well.
Ruth Reid –
I was skeptical about goldfish being intelligent, but this one has learned to swim to the front of the tank when I open the door. It’s a peaceful addition to my home aquarium.