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Sapphire Devil
Sapphire Devil
Origin
Indo-Pacific
Habitat Size
50-150 Liters
Water Type
Salt Water
Water Temperature
24º-28ºC
Cost in India
₹80 - ₹150
Size
2 - 3 inches (Small)
Diet
Omnivore
by Happy Pet TeamUpdated on 29 Oct 2025
Introduction to Sapphire Devil Fish (Chrysiptera cyanea)
Sapphire Devilfish is a small but striking saltwater marine known for its vibrant sapphire-blue body and aggressive temperament. It is widely known as Blue Devil Damselfish, Blue Demoiselle, or Orangetail Blue Damselfish. The devilfish is native to shallow reefs and lagoons of the Indo-West Pacific (e.g. Indonesia, Philippines, Australia). It thrives in well-structured reef environments with plent of hiding spots & rock crevices.
Size of Sapphire Devil Fish
Blue damselfish size is close to 8-8.5 cm (~3.1-3.3 inches) in total length. It can grow slightly bigger in size if optimum care is taken.
Sapphire Devil Fish Life Expectancy
The devilfish can live anywhere between 3 to 6 years. It can live longer as well if a stable, good diet is maintained & the living conditions are at the best.
Can I get a Sapphire Devil Fish in India?
Sapphire Devil Fish is stocked in online aquarium shops and local stores, with prices between ₹800 and ₹1,200.
Blue damselfish tank mates are-
- Larger peaceful or semi-aggressive fishes
- Reef invertebrates and corals
- Semi-aggressive fishes in groups
Avoid pairing with-
- Very small, timid species
- Similar size that are aggressive and will fight over territory
- Other damselfish species (in a small tank)
- Slow moving or long-finned fish
Characteristics
Temperament
Aggressive
Friendly
Compatibility with other fishes
Not Friendly
Super Friendly
Habitat Size
Small
Large
Sapphire Devil Fish Habitat
Initial Setup Cost
₹4,000 - ₹12,000
Water Temperature
24º -28ºC
Water Type
Salt Water
PH Level
8.1 - 8.4
Ensure the right aquarium conditions are met that mimic the devilfishes’ natural habitat to reduce its territorial aggression.
Parameter | Details |
Essential Equipment
Aquarium tank
Water filter
Heater
Light
Substrate
Decor
Dietary needs of Sapphire Devil Fish
Avg Monthly Expenses
₹80 - ₹ 150
Blue damselfish needs to be fed 1 to 2 times a day in small amounts. Avoid overfeeding the fish for good health and care.
Food Type | Examples |
Sapphire Devil Fish Health & Common Issues
Common Health Issues
Fin rot
White spot / ick
Velvet disease (yellowish-brown spots on the skin)
Ammonia poisoning
Bacterial infections
Swim bladder disease
Signs of good health
Active
Bright coloration
Good apetite
Undamaged fins
Signs of sickness
Loss of appetite
Lethargic behaviour
Frequent hiding
Dull coloring
Swimming abnormally
Make sure the following measures are taken care of to keep the devilfish in good health conditions.
- Prone to common marine fish ailments like marine ich and other parasites if water quality deteriorates.
- Diet imbalance (too much carnivore diet, or too many low-quality feeds) may reduce coloration or growth.
- Stress from overcrowding or inadequate hiding spaces can lead to erratic behaviour or aggression.
Prerequisites for a Fish
Adequate tank space
Cleanliness
Effort & commitment
Enriching Environment
Written by
Happy Pet TeamAuthor
Team Happy Pet is a passionate collective of pet experts, enthusiasts, and advocates dedicated to sharing trusted and insightful content.
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Frequently Asked Questions
Can you keep more than one Sapphire Devil in the same tank?
Yes, but be cautious. If multiple individuals are kept, ensure a sufficiently large tank and plenty of hiding places. Best is one male with several females rather than mixing many males.
Is the Sapphire Devil reef safe?
Generally yes for hardy corals and invertebrates.
How soon after setting up a tank can I add a Sapphire Devil?
Introducing such a fish into a fully matured aquarium helps reduce stress and aggression.
How to dim aggression in Sapphire Devils?
Provide enough hiding spots, break lines of sight with décor, avoid placing multiple males in small tanks, feed well, maintain stable water parameters.