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Siamese Algae Eater

Siamese Algae Eater

Origin

South East Asia

Habitat Size

50-150 Liters

Water Type

Fresh Water

Water Temperature

24º-26ºC

Cost in India

₹80 - ₹150

Size

2 - 6 inches (Small)

Diet

Omnivore

Silver fish with black stripe swimming in aquarium
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by Happy Pet TeamUpdated on 2 Dec 2025

Siamese Algae Eater (Crossocheilus oblongus) is one of the freshwater fish that is most famous for its unsurpassed ability to control algae growth in tanks. The oval-shaped body, metallic silver color, and beautiful horizontal black stripe from head to tail, both functional and lovely, make the fish a favorite among aquarists for a natural way of cleaning the tanks. Active and strong, the fishes are aquarists' favorites for a natural way of tank cleaning.

 

Characteristics

Temperament

Aggressive

Friendly

Compatibility with other fishes

Not Friendly

Super Friendly

Habitat Size

Small

Large

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Habitat Requirements of the Siamese Algae Eater

Initial Setup Cost

₹4,000 - ₹12,000

Water Temperature

24º -26ºC

Water Type

Fresh Water

PH Level

6.5 - 7

Tank Setup

 

Essential Equipment

Aquarium tank

Water filter

Heater

Light

Substrate

Nutritional Guide of the Siamese Algae Eater

Avg Monthly Expenses

₹80 - ₹ 150

Despite being famous for eating algae, Siamese Algae Eaters need to be provided with a balanced diet so that they stay healthy. A variety of such foods is ideal:

 
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Health & Care of the Siamese Algae Eater

Common Health Issues

Fin rot

White spot / ick

Columnaris (cotton wool-like growth on the skin)

Velvet

Ammonia poisoning

Parasitic infections

Signs of good health

Active

Bright coloration

Good apetite

Signs of sickness

Loss of appetite

Lethargic behaviour

Dull coloring

Tattered fins

Swimming abnormally

Common Issues

 

Prerequisites for a Fish

Adequate tank space

Cleanliness

Effort & commitment

Enriching Environment

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Written by

Happy Pet Team

Author

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

How many Siamese Algae Eaters should I keep together?

It is recommended to keep them in groups of at least three to encourage natural behavior and reduce stress. They are social fish and thrive better in small groups.

What do Siamese Algae Eaters eat?

They primarily eat algae but should be supplemented with high-quality flake foods, pellets, and blanched vegetables like zucchini, cucumber, and spinach. A varied diet ensures they receive all necessary nutrients.

Do Siamese Algae Eaters need a specific type of substrate?

While Siamese Algae Eaters are not very particular about the substrate, a sandy or fine gravel substrate is preferred as it mimics their natural habitat. It also helps in maintaining a clean environment where algae can grow.