Convict Tang: The Peaceful & Hardworking Algae Grazer
The Convict Tang (Acanthurus triostegus), also known as the Convict Surgeonfish, is a popular and very beneficial addition to a marine aquarium. This tang is easily identified by its unique pattern: a light gray or white body with five to six prominent black vertical stripes that give it a ‘convict’ look. While many tangs are known for their aggression, the Convict Tang is generally peaceful with other species, making it an excellent community tank resident. As a herbivore, it is a fantastic algae-eater and is a valuable part of any clean-up crew. It is completely reef-safe and will not harm corals or invertebrates.
Specifications
| Feature | Detail |
|---|---|
| Scientific Name | Acanthurus triostegus |
| Common Name | Convict Tang / Convict Surgeonfish |
| Size (adult) | 6 to 8 inches |
| Diet | Herbivore, algae-eater |
| Compatibility | Peaceful with most fish; reef-safe |
| Water Temperature | 75–82°F |
| Water pH | 8.1–8.4 |
FAQ
Is the Convict Tang safe around corals and invertebrates?
Yes, the Convict Tang is completely reef-safe and will not harm corals or invertebrates.
What kind of diet does the Convict Tang require?
The Convict Tang is a herbivore and primarily eats algae. It thrives on algae-based foods such as nori, algae wafers, and marine vegetable flakes.
How does the Convict Tang compare to other tang species in terms of temperament?
The Convict Tang is generally peaceful and less aggressive than many other tang species, making it a good choice for community tanks.
Gabrielle Clarkson –
I added a Convict Tang to my 120-gallon reef tank and it has been a great addition. It spends most of its time grazing on algae and doesn’t bother the corals. Very calm and active, it fits well with my other fish.
Fiona Russell –
This tang has been in my tank for six months now. It’s clean, peaceful, and doesn’t stress the other fish. I appreciate that it’s reef-safe and doesn’t eat corals or anemones.
Anne Davidson –
The Convict Tang is a good algae eater and stays calm in the tank. I did have to provide some algae wafers to keep it fed, but overall it’s a reliable and low-maintenance addition.