Source: Wikimedia Commons
Siamese Algae Eater
BeginnerOne of few fish that eats black beard algae. Valued for planted tank algae control. Becomes somewhat aggressive when mature.
Difficulty
Beginner
Temperature
22〜28℃
Lifespan
5-10 years
Size
10-15cm
Diet
Algae, pellets, frozen food
About
The Siamese algae eater (Crossocheilus oblongus) is a cyprinid fish native to the Chao Phraya and Mekong River basins of mainland Southeast Asia and the Malay Peninsula. Its singular claim to fame in the aquarium hobby is its willingness to consume black beard algae (Compsopogon species) — a stubborn, brush-like algae that most other algae-eating fish and invertebrates refuse to touch. This makes it an invaluable addition to planted aquariums struggling with this persistent problem. Adults reach 15–16 cm. The body is silver with a solid black stripe running continuously from the snout tip to the end of the tail fin. Confusion with the similar-looking flying fox (Epalzeorhynchos kalopterus) and 'false' Siamese algae eaters is common; key distinguishing features include the unbroken black stripe extending into the tail and the absence of barbels. Juvenile individuals are peaceful, but adults develop territorial tendencies toward bottom-dwelling tankmates. Preferred conditions are 24–28°C at pH 6.0–7.5. Solo keeping is generally more settled than keeping multiples.
Source: Wikipedia (CC BY-SA 4.0)
Basic Info
Origin
Mainland Southeast Asia
Lifespan
5-10 years
Size
10-15cm
Temperature
22〜28℃
Diet
Algae, pellets, frozen food
Care Guide
Care Specifications
References & Sources
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Primary sources
Regulations & Conservation Status
Not CITES-listed
Crossocheilus 属に CITES 掲載種なし。
Sources: FishBase / Seriously Fish / CITES Appendices (Checklist)
Regulations may change. Always verify the latest information with the relevant authorities.
Siamese Algae Eater Listings
Loading latest listingsFind listings for this species
