Comet – Black

The Comet Black is a striking and energetic variant of the popular Comet goldfish (Carassius auratus), prized for its deep black coloration and long, flowing fins. As a hardy, coldwater species, the Comet Black adapts well to a range of freshwater environments, making it an attractive choice for both novice and experienced aquarists. While it retains the active nature and resilience of standard Comets, this variety stands out due to its unique pigmentation and graceful swimming pattern.

Shop live aquarium fish online with confidence, with ourlivestock delivery guarantee.

Features of a Comet Black

• Slender, elongated body with a deeply forked, flowing caudal fin

• Velvety black coloration, sometimes with hints of bronze or blue under optimal lighting

• Reaches up to 30 cm in length under proper care

• Lifespan of 1015 years, often longer with excellent conditions

• Active swimmer, often seen darting through open areas of the tank

• Lacks a swim bladder disorder common to fancy goldfish due to its streamlined shape

The Best Aquarium Size for Comet Black

A single Comet Black requires a minimum tank size of 150 litres. However, due to its high activity level and potential size, a larger aquarium of 200250 litres is preferable, especially if housing multiple specimens. Ample horizontal swimming space is critical for their well-being.

After an Aquarium for your fish? Browse ourAquarium Tank Selection here

Tank Mate Compatibility for Comet Black

Comet Black goldfish are peaceful but active, best housed with other cool water, similarly tempered species:

1. Shubunkin Goldfish

2. Sarasa Comet

3. Weather Loach

4. White Cloud Mountain Minnow

5. Rosy Barb

6. Zebra Danio

Avoid tropical or slow-moving species, as well as fin-nippers.

Diet for Comet Black

A varied omnivorous diet supports optimal coloration and health. Feed a combination of:

• High-quality sinking pellets or goldfish flakes

• Blanched vegetables (peas, spinach, zucchini)

• Occasional protein sources (bloodworms, brine shrimp)
  Feed 12 times daily, offering only what they can consume in under two minutes.

BrowseourHigh Quality Fish Foodonline.

Aquarium Setup for Comet Black

Aquarium Filtration

Strong filtration is essential. Use a canister or high-capacity hang-on-back filter to maintain clean water and adequate oxygenation.

Browse aquarium filtershere.

Aquarium Plants

Choose hardy, cool-water species like Anubias, Java Fern, or Elodea. Secure plants well, as Comets may uproot them during foraging.

Interested in live plants for your aquariums? Browselive plantshere.

Aquarium Lighting

Moderate lighting enhances coloration without stressing the fish. LED systems with adjustable brightness are ideal.

Needaquarium lighting for your fish tank? Browse ourAquarium Lighting.

Aquarium Heating

No heater is required if room temperature remains stable between 1822C. Avoid temperatures exceeding 24C.

Looking for a suitable fish tank heater? Shop aquarium heatershere.

Aquarium Substrate

Smooth gravel or sand prevents injury and allows natural foraging. Avoid sharp or jagged substrates.

Shop avariety of Aquarium Substrateshere.

Aquarium Decorations

Use smooth rocks, driftwood, and caves to provide visual interest and hiding spaces, but leave ample open space for swimming.

Check out our huge range ofAquarium Ornaments.