The Siamese Algae Eater (Crossocheilus oblongus) is a great addition to any community tank. Originating from Thailand, Laos, and Cambodia, these fish are renowned for their algae-eating capabilities and also thrive in streams and rivers with abundant vegetation. In aquariums, Siamese Algae Eaters often graze on hair algae and also perch on decor.
Moreover, while hair algae can be a significant part of their diet, they also consume flakes, pellets, and algae wafers, ensuring they remain healthy and active. They can be kept singly or in groups and are generally peaceful, coexisting well with other fish species. Typically reaching up to 6 inches, however with most around 4 inches, they are suitable for various tank setups.
Set-Up Your Tank
- Make sure it all works: We suggest your tank be set-up for at least 24 hours before ordering fish to ensure all equipment is working.
- Use a heater: GloFish® fish enjoy tropical temperatures of 76-80F.
- Make Them Shine Their Brightest: GloFish® fish absorb light and then re-emit it, so their unique fluorescent colors will appear brighter and more vibrant as the amount of light is increased. So the more blue light you have the more your fish will shine!
Add Your Fish
- Follow this acclimation guide to make sure they adjust to their new home.
Feed Your Fish
- Feed two to three times daily, in small amounts, only as much as your fish can eat in a minute or so.
- Danios, tetras, and barbs GloFish Special Flake food or GloFish® MicroCrisp Food
- GloFish® Sharks and Cory Catfish need GloFish® Wafers.
- Treat all your fish to GloFish® Daphnia Treat that aids in digestion.
GloFish® fish are protected by United States patents, and their production and distribution are regulated by the Food and Drug Administration (“FDA”). Unauthorized production, distribution, intentional breeding, and sales or trades of GloFish® fish offspring are strictly prohibited without proper FDA approvals.
GloFish® fish are always available to be ordered. They are delivered Tuesday through Friday by 8pm via FedEx. See our shipping schedule.
Orders placed between Thursday 3:01am – Monday 3am EST → Arrive by 11pm on Tuesday
Orders placed between Monday 3:01am – Tuesday 3am EST → Arrive by 11pm on Wednesday
Orders placed between Tuesday 3:01am – Wednesday 3am EST → Arrive by 11pm on Thursday
Orders placed between Wednesday 3:01am – Thursday 3am EST → Arrive by 11pm on Friday
Temperature Delays: Fish are sensitive to high and low temperatures. To ensure your fish make the journey safely, we reserve the right to hold orders until the temperatures are safe for their arrival. This generally means no overnight temps of less than 32°F (40°F for barbs).
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Customer Reviews
4.4 Based on 17 Reviews
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04/13/2025
A
United States
Glo fish
This was my third order al was good one fish was dead but all others were great. Fish are vibrant and in good health.
10/13/2024
TM
United States
Fish
I hope they do there job..
03/31/2024
DB
United States
All the fish died
03/23/2024
SH
United States
Great
We love all our GloFish. They are so fun to watch. You get to learn their unique personalities. Customer Service was great too.
01/08/2024
GB
United States
Algae Eater and more Tetras
Another great order from Glofish! Fish arrived in healthy, perfect condition. Really well packaged and great instructions. I am and will continue to be a repeat customer. Order now, you’ll be glad you did!
12/05/2023
HS
United States
The best!
The fish are amazing and my son is so excited! Been over two weeks and fish are doing great!
10/07/2023
DS
United States
Very satisfied!
Fish arrived fast and appears to be healthy. Would absolutely buy from them again! :)
08/25/2023
A
United States
Amazing company to work with
Wonderful little guys
07/15/2023
LS
United States
Very pleased
All the fish arrived alive. they are healthy and doing great. Thank you!
07/03/2023
KB
United States
Dead fish
Love the fish but the service is horrible, had 2 dead glow fish and 1 dead algae eater upon arrival, every time we called it said closed and that was during business hours. Even left multiple messages and no return calls.
03/20/2023
AH
United States
Easy care
Healthy and active he eats food and algie so he is perfect for a small tank.
02/11/2023
KS
United States
Algea Eaters are the cutest!
Our algea eater is so cute! Very personable. Very active. Definitely recommend!
02/07/2023
A
United States
Let you know in a few months.
The fish look OK so far.
02/06/2023
HH
United States
Sickly fish
I bought six fish, the algae eaters are fantastic and one of the three mollies as well though two of the mollies looked sickly when I opened the box and were dead within a week
10/05/2022
KM
United States
Great housekeeper!
Healthy, handsome, busy fish! Great company to deal with. I will be ordering again.
09/16/2022
A
United States
Very pleased
Really enjoying my first aquarium. Beautiful little creatures. Relaxing to watch.
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