Fish that Suck: The Siamese Algae Eater

The Siamese Algae Eater


Yeah, they suck. I mean that in the literal sense (they suck algae) and not in the figurative sense (they’re lame). Actually, the fact that they suck algae makes them the opposite of sucky — they’re great! Having these fish around will keep the glass and water of your aquarium nice and clean.


The Siamese algae eater is a yellow fish that has a black stripe extending from its head to its tail. They have quite a bit of sheen to them, which helps them stick out from the plants they love to munch around. They may not be the prettiest fish you’ll ever see, but they more than make up for it with their diligent work ethic. You should be careful, though: Siamaese algae eaters are often mistaken for the flying fox fish, which also eats algae.

Siamese Algae Eater

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With the scientific name Crossocheilus oblongus, the Siamese algae eater is a bott0m-dwelling fresh water fish. Where does it come from? I’ll let you figure out the answer to that riddle all on your own. It likes to hang out in small schools with other fish of its kind, and this generally amiable fish will not show much aggression towards other fish. It might, however, get into a few bar brawls with other fish of its species.

Siamese Algae Eater

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Caring for the Siamese algae eater

One of the reasons why the Siamese algae eater is so incredibly popular is that it’s one of the hardiest fish out there. Not only is it long lived with a decade-long lifespan, but it is also fairly resilient. Your Siamese algae eaters will keep on kicking while other fish in the aquarium have long since gone belly-up.

The Siamese Algae Eater Hanging Out Around Plants



The diet is the most important thing with a Siamese algae eater, and simultaneously the thing you have to worry about the least. These fish will dutifully clean your tank of green and red algae, and it will gleefully chomp down thread and brush algae, which are typically ignored by other fish. They’ll even eat flatforms when given the chance, so they promote the healthy growth of the entire aquarium ecosystem. They fit best in aquariums that have a heavy mix of plants and bright lights, as these aquariums tend to produce a lot of algae. You will, however, want to keep a tight lid on the aquarium, as these fish are known to take a leap of faith into the great unknown.


One thought on “Fish that Suck: The Siamese Algae Eater

  1. Cory

    I find that the Siamese algae eaters are great until they hit about 4 inches, they get lazy and aggressive due to spawning age.


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