Cambodian log sucker
Garra cambodgiensis
Also known as false Siamese algae eater
FreshwaterFish
Care at a glance
- Temperature
- 68–81°F
- 20–27°C
- pH
- 6.5–7.5
- Adult size
- 5.9 in
- 15 cm
- Minimum tank
- 32 gal
- 120 L
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- No record
- Rarity
- Rare
- Family
- Cyprinidae
- Origin
- Thailand, Laos, Cambodia, Vietnam
Overview
The Cambodian log sucker is a peaceful, gregarious bottom dweller that does best in a small group of three to five, where it grazes and forages together rather than living alone. It spends its time working along the floor and over rocks and wood, rasping algae and biofilm with an underslung, sucker like mouth. It mixes well with calm community fish and other active bottom feeders, though individuals can squabble briefly over feeding spots. Offer a mixed diet built around algae wafers, spirulina, and blanched vegetables, with sinking pellets and frozen foods to complete it. A tank around 120 liters or larger gives the group enough floor space.
In the wild
This fish comes from clear, fast flowing hill streams and rivers across Thailand, Laos, Cambodia, and Vietnam, where it clings to rocks in well oxygenated, current swept runs. It prefers cooler to moderate water of about 20–27 C and a near neutral pH of 6.5–7.5. Reproduce that setting with strong flow, a substrate of sand, gravel, and smooth stones, and plenty of water worn rock and driftwood for grazing and shelter. High oxygen levels and clean, clear water matter more to this species than heavy planting.
Good to know
Garra cambodgiensis belongs to the family Cyprinidae and grows to around 15 cm, larger than many of the algae grazing fish it is sold alongside. Members of the genus Garra have a fleshy, sucker like lower lip that lets them hold position and feed in strong current. Its breeding habits in the wild involve seasonal movement in flowing water, and there is no established record of it being reproduced in home aquaria. Most fish in the trade are wild collected or pond raised on Southeast Asian farms.
Did you know
This species is often sold as the false Siamese algae eater because it looks so much like the true Siamese algae eater, Crossocheilus oblongus. The quickest ways to tell them apart are the mouth and barbels, and the fact that the log sucker grows noticeably larger and heavier with age.
Weekly picks
Tank mates
Cambodian log sucker is a peaceful, social species that keeps to the bottom. These picks share a community profile with it, are safe together in both directions, and overlap on water type, temperature and pH.

Montezuma swordtail
Xiphophorus montezumae
Freshwater5.5 in (14 cm) · 32 gal (120 L)68–79°F (20–26°C)
Redfin halfbeak
Nomorhamphus ebrardtii
Freshwater3.5 in (9 cm) · 29 gal (110 L)75–81°F (24–27°C)
Orinoco angel pleco (L201)
Hypancistrus sp. L201
Freshwater5.9 in (15 cm) · 30 gal (115 L)79–86°F (26–30°C)
Sharptooth tetra
Micralestes acutidens
Freshwater3.5 in (9 cm) · 32 gal (120 L)72–79°F (22–26°C)
Striped panchax
Aplocheilus lineatus
Freshwater4.3 in (11 cm) · 30 gal (115 L)72–77°F (22–25°C)
Long nosed arched cory
Corydoras narcissus
Freshwater2.8 in (7 cm) · 30 gal (115 L)73–77°F (23–25°C)
Common questions
What size tank does a Cambodian log sucker need?
A Cambodian log sucker needs at least 32 gal (120 L). It spends most of its time in the bottom.
What temperature and pH does a Cambodian log sucker need?
A Cambodian log sucker is comfortable at 68–81°F (20–27°C) with a pH of 6.5–7.5.
How big does a Cambodian log sucker get?
An adult Cambodian log sucker reaches about 5.9 in (15 cm).
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