🐟 Sarasa Comet Goldfish Care Sheet

🔹 Overview

Category	Details
Scientific Name	Carassius auratus
Common Name	Sarasa Comet Goldfish
Origin	Japan (selective breeding from common goldfish)
Adult Size	20–30 cm (8–12 in)
Lifespan	10–15 years (sometimes longer with excellent care)
Temperament	Peaceful, social, active
Tank Level	Mid to bottom

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🔹 Tank Setup

Parameter	Ideal Range
Tank Size	100+ liters (25+ gallons) per adult fish
Temperature	18–24 °C (65–75 °F)
pH	6.5–7.5
Hardness	Moderate (5–19 dGH)
Substrate	Sand or smooth gravel
Decor	Plants (strong-rooted or artificial), open swimming space
Lighting	Moderate
Filtration	Strong, efficient filtration (goldfish produce a lot of waste)

Tips:

• Sarasa Comets are active swimmers—ensure ample open swimming areas.

• Use a large, filtered tank to maintain water quality.

• Regular weekly water changes (25–50%) help prevent ammonia buildup.

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🔹 Diet

• Type: Omnivorous

• Best Foods: High-quality goldfish pellets, flakes, frozen/live foods (bloodworms, daphnia), and blanched vegetables (peas, spinach, zucchini).

• Feeding Frequency: 2–3 times daily; feed small portions to prevent overfeeding and digestive issues.

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🔹 Behavior & Compatibility

• Peaceful and social; usually kept in groups of 2 or more.

• Active and hardy, suitable for community goldfish tanks.

• Can coexist with other fancy or comet goldfish varieties.

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🧭 Tank Mate Guide

✅ Compatible Species

• Other goldfish (comets, fantails, shubunkins, etc.)

• White Cloud Mountain Minnows (in cooler water)

• Rosy Barbs (if temperature compatible)

⚠️ Avoid or Use Caution With

• Tropical fish requiring high temperatures

• Aggressive or nippy fish

• Small delicate fish that may be eaten

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🐣 Breeding Info

• Spawning Method: Egg scatterers; they lay eggs among plants.

• Parental Care: None; adults may eat eggs.

• Fry Care: Feed infusoria or powdered fry food first, then small brine shrimp or microworms.

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🌿 Fun Facts

• Sarasa Comets are prized for their bright red-and-white coloration.

• Very hardy and ideal for beginner and intermediate aquarists.

• Active and playful, often recognizable by their long, flowing tails.

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