• Scientific name: Crossocheilus oblongus
• Synonyms: Crossocheilus siamensis, Epalzeorhynchos stigmaeus, Epalzeorhynchus siamensis, Labeo oblongus
• Common name: Siamese algae eaters
• Group: Cyprinids
• Habitat: Asia; Thailand, Malaysia
• Size: 15 cm
• Biotope: Their natural habitats are streams and rivers as well as flooded forests during the rainy season.
• Social behavior: It is an active and fast swimmer, which thrives best in schools but can also be kept alone or in pairs.
• Diet: Omnivores, but prefer algae.
• Breeding: They haven't yet been bred in captivity.
• Tank: Minimum 100 litres
• Population: 3-4 fish for 130 litres
• Decoration: Roots, Plants.
• Temperature: 24-26 °C
• pH: 6,5-7,2
• Hardness: 2,8-8,5 NK°
• Lifespan: 5-10 years

Description: These fish are omnivores, but their diet is mainly based on plant matter. These fish should be kept in planted community aquariums where there are no aggressive fish and the tank has an abundant source of hair algae, thread algae, and other types of 'brush' algae that most occurs in planted aquariums. Siamese algae eaters should be put in a planted tank a few weeks after it has been established, once the alga begins to grow. The Siamese algae eaters is capable of eating algae in hard to reach places, as well as algae that grows on leaves and stems, where it is unpractical to scrape off. Once the algae supply runs low, however, the Siamese algae eaters will look into other food sources, such as moss and soft leaved plants. Good tankmates for the Siamese algae eaters include all non-aggressive community fish, mainly gouramis, charachins, Apisstogramma, loaches, and cory catfish. The Siamese algae eaters, when coupled with the Amano shrimp (Japonica amino), can deliver a knockout punch to any algae-ridden tank! The Siamese Algae eater is an interesting and fun fish to watch, especially when in their natural habitat, being a planted community aquarium. These Algae Eaters are not to be confused with the Chinese Algae Eater. The Chinese Algae eater's main food is not algae, per say, but tends to be a meat or flake eater. Also, the CAE grows 4 inches longer than the Siamese algae eaters, and is quite territorial.