Siamese Algae Eater

The Siamese Algae Eater, scientifically known as Crossocheilus oblongus (also referred to as Crossocheilus siamensis), is a highly effective algae-eating fish that is popular among freshwater aquarium enthusiasts. Native to Southeast Asia, particularly in Thailand, Malaysia, and Indonesia, these fish are prized for their ability to consume a wide variety of algae, including stubborn types like black beard algae. The Siamese Algae Eater is characterized by its slender, torpedo-shaped body and a distinctive black horizontal stripe that runs from its nose to the tip of its tail, making it an attractive and functional addition to many aquariums. These fish typically grow to about 5-6 inches (12-15 cm) in length and can live for up to 10 years in captivity with proper care.

Habitat and Tank Requirements:

In their natural habitat, Siamese Algae Eaters are found in fast-flowing rivers and streams with plenty of rocks, driftwood, and vegetation. To replicate these conditions in a home aquarium, it’s important to provide a tank with suitable water parameters and an environment that mimics their natural surroundings.

Tank Size and Water Parameters:

This table provides the optimal water conditions for keeping Siamese Algae Eaters healthy and active. These fish thrive in well-maintained tanks with stable water parameters that mimic the moderately hard, slightly acidic to neutral conditions of their natural habitat.

Siamese Algae Eaters thrive in tanks with a substrate of fine gravel or sand, which mimics the riverbeds of their natural environment. The tank should be well-decorated with rocks, driftwood, and live plants to provide hiding spots and surfaces for algae growth, which these fish will naturally graze on. Given their active nature and tendency to dart around the tank, a spacious environment with plenty of swimming room is essential. A moderate to strong filter is recommended to simulate the flowing waters of their native habitat, as well as to maintain water quality.

Behavior and Compatibility:

Siamese Algae Eaters are peaceful, social fish that do well in groups, although they can also be kept individually. They are known for their active and inquisitive nature, often seen exploring the tank and grazing on algae throughout the day. These fish are excellent companions in community tanks, coexisting peacefully with a variety of other species, including tetras, barbs, and gouramis. However, they should not be housed with aggressive fish that might bully them or more delicate species that could be stressed by their active behavior.

While Siamese Algae Eaters are often introduced to aquariums for their algae-eating capabilities, it is important to supplement their diet with sinking pellets, wafers, and blanched vegetables like zucchini or cucumber, especially in tanks where algae growth is limited. This ensures they receive a balanced diet and remain healthy. As they grow, Siamese Algae Eaters may become more omnivorous, so providing a varied diet is key to keeping them in good condition.

With proper care, Siamese Algae Eaters can be a long-lived and beneficial addition to any freshwater aquarium, helping to control algae while adding lively activity to the tank.