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Siamese Algae Eater (Small)

Siamese Algae Eater (Small)

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Tank Level:


Minimum Tank Size:

20 Gallons




6.5 - 7.5

General water hardness:

5 - 20 dH


75 F to 79 F (24 C to 26 C)



The Siamese Algae Eater (Crossocheilus oblongus) is a medium-sized algae-eating bottom feeder. They have light-coloured, slender, shark-like bodies, with a distinct black stripe going across their sides.

This listing is for juvenile SAE (Siamese Algae Eaters), which are a little over an inch long.

The SAE is extremely popular in the aquarium hobby, as it is one of the most efficient algae eating fish available. These fish are not suitable for small aquariums, as they reach 6 inches in length and live for up to 10 years. A single SAE will require a 20-gallon aquarium. If you are looking for a smaller species of algae eater, we would recommend a shoal of otocinclus catfish or nerite snails. While these fish will eat most species of algae in your aquarium, they are not a solution to algae growth and may make algae growth worse over time. Always assess the reasons why algae may be growing in your tank, as solving why it's growing in the first place is the best means of reducing it all together. 

These fish will require a minimum of 20 gallons per SAE, and prefer their water to be in the temperature range of 75-79 degrees Fahrenheit. These fish should be kept on a soft substrate such as sand, as they can damage their barbels on coarse gravel. They will resort to eating your live plants if not fed well enough, so make sure you're always supplementing their diets with other foods to ensure they're fed. It is likely that the algae growing in your aquarium will not be enough food for them in the long run. Their diet can be supplemented with algae wafers, veggie pellets and flakes, and fresh or blanched vegetables such as spinach or zucchini.

While these fish are not aggressive and will not attack other fish, they are very active and may stress out some slower-moving species (such as Rummynose tetra). Ideally, they should not be kept with other bottom feeders such as rainbow or red-tailed sharks, or pleco species, as other bottom feeders tend to be territorial and will harass the SAE. Peaceful non-territorial bottom feeders such as corydora are a good option. They will live peacefully with most shrimp and snail species.


Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.

(Photo credit "Meet the Pet")