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Pineapple fish
Pineapple fish
Origin
Australia
Habitat Size
150-400 Liters
Water Type
Salt Water
Water Temperature
22º-28ºC
Cost in India
₹200 - ₹300
Size
6 - 8 inches (Medium)
Diet
Carnivore
by Happy Pet TeamUpdated on 29 Oct 2025
Pineapplefish Introduction (Cleidopus gloriamaris)
The Pineapplefish is also known as knightfish, mailfish, & port-and-starboard lightfish. It has striking armor-like scales and unique bioluminescent organs. The fish likes to lurk in caves & rocky overhangs during the day while it ventures onto sandy flats to hunt during the night. It is native to the eastern Indian Ocean & the western Pacific Ocean. Aquarists love the fish as it is prized for its showy appearance.
What is the Size of the Pineapplefish?
The Pineapplefish size reaches anywhere between 20-25 cm (~8-10 inches) under good care.
What is the life expectancy of Pineapplefish?
The Pineapplefish life expectancy is 5-8 years provided the necessary water conditions, diet, and shelter are appropriately maintained.
Best Compatible With:
- Slow-moving or non-aggressive fish
- Other marine species
- Non-heavy swimmers or aggressive feeders
Avoid Pairing With:
- Small fish or invertebrates
- Highly aggressive or territorial fish
- Fast swimmers that may outcompete Pineapplefish
Where can I buy a Pineapplefish?
Pineapplefish is offered in aquarium shops and online, usually costing ₹1,000–₹2,000.
Characteristics
Temperament
Aggressive
Friendly
Compatibility with other fishes
Not Friendly
Super Friendly
Habitat Size
Small
Large
Pineapplefish Habitat Requirement
Initial Setup Cost
₹10,000 - ₹30,000
Water Temperature
22º -28ºC
Water Type
Salt Water
PH Level
7.8 - 8
Here are some key habitat needs for keeping Pineapplefish cleidopus gloriamaris healthy.
Parameter | Details |
Essential Equipment
Aquarium tank
Heater
Water filter
Light
Substrate
Decor
Dietary needs of Pineapplefish
Avg Monthly Expenses
₹200 - ₹ 300
Maintaining a healthy diet for Pineapplefish Cleidopus gloriamaris is crucial. Given below is the table representing what they love to eat.
Food Type | Details |
Health & Care of Pineapplefish
Common Health Issues
White spot / ick
Velvet
Bacterial infections
Parasitic infections
Columnaris (cotton wool-like growth on the skin)
Fungal infections
Signs of good health
Active
Bright coloration
Good apetite
Signs of sickness
Loss of appetite
Lethargic behaviour
Swimming abnormally
Cloudy eyes
White growths
- Maintain very stable marine water parameters without any fluctuations in salinity, pH, or temperature.
- Ensure excellent filtration. Make sure organic waste, nitrates etc. are in control.
- Offer hiding places and dim lighting to mimic natural reef/ rocky cave habitat.
- Feed during dusk/ night to align with the natural feeding rhythm.
- Monitor for typical marine fish issues (parasites, bacterial infections) especially if hiding places are not cleaned or water changes are neglected.
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 Pineapplefish be kept in a reef aquarium?
They are not entirely reef safe. Their carnivorous diet means they may prey on small crustaceans and possibly disturb invertebrates.
Do they need a group or can they be kept singly?
Usually kept singly or in very small numbers. They are generally solitary in behavior during the day.
How difficult is it to feed?
They can be difficult at first. Many will refuse non-live food. Adapting requires careful patience.
Is Pineapplefish good for beginner aquarists?
Ideally, no. It is due to their specialized needs such as lighting, nightly feeding, large tank, & stable marine environment). They are better suited for advanced hobbyists.