Siamese Algae Eater Care Guide
Crossocheilus oblongus · Freshwater Fish
What Siamese Algae Eater look like
The Siamese Algae Eater (Crossocheilus oblongus) exhibits a sleek, laterally compressed body that can reach a maximum adult size of approximately 6 inches (15 cm). This species displays sexual dimorphism, with males typically being more slender and exhibiting a more pronounced black stripe than females. The body is characterized by a pale silver-gold coloration, adorned with a bold, ragged-edged black stripe that extends from the snout to the fork of the caudal fin, a distinguishing feature that helps differentiate it from similar species. The mouth is downward-facing, equipped with small barbels, which are adaptations for foraging on algae and biofilm. The overall fusiform shape and the presence of an adipose fin contribute to its streamlined appearance, enhancing its agility in the water column. Defensive adaptations include rapid swimming and the ability to blend into aquatic vegetation, providing some protection from predators.
Behavior & temperament
The Siamese Algae Eater is primarily a social fish, often found in small groups, although it can also exhibit solitary behavior. It typically occupies the mid to upper levels of the water column, where it actively grazes on algae and detritus. This species is known for its peaceful temperament, making it an excellent addition to community aquariums. During breeding, the Siamese Algae Eater is an egg scatterer, releasing adhesive eggs that adhere to surfaces. They exhibit minimal aggression towards tank mates, although males may display territorial behavior during breeding periods.
Diet & feeding
In the wild, the Siamese Algae Eater primarily feeds on algae, detritus, and biofilm, making it an obligate herbivore. In captivity, it requires a diet rich in plant matter, including high-quality spirulina flakes, algae wafers, and blanched vegetables such as zucchini and spinach.
Behind the name
Crossocheilus (cross; lip) and oblongus (elongated), referring to the fish's elongated body shape and distinctive mouth structure.
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Siamese Algae Eater?
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