Ancistrus demasceni “Rio Tocantins”
This is a peaceful freshwater fish native to the Amazon and Tocantins River systems. Known for its unique snout growths, mature males and sometimes females develop soft, bushy tentacles, distinguishing them from other species. These fish thrive on a mainly vegetarian diet, including algae wafers, spirulina, and vegetables like zucchini and cucumber, with occasional small meaty treats. They are generally compatible with most community fish, though males may become territorial in small tanks. Their non-aggressive nature makes them an excellent addition to diverse aquariums.
Specifications
| Feature | Detail |
|---|---|
| Species | Ancistrus demasceni |
| Habitat | Amazon and Tocantins River systems |
| Size (adult) | Up to 3 inches |
| Diet | Vegetarian: algae wafers, spirulina, zucchini, cucumber; occasional meaty foods |
| Compatibility | Most community fish; males may become territorial in small tanks |
| Temperament | Peaceful, non-aggressive |
FAQ
What makes Ancistrus demasceni different from other catfish species?
Mature males and sometimes females develop soft, bushy tentacles on their snouts, which is a distinguishing feature not commonly seen in other catfish species.
What type of diet should I provide for this fish?
A mainly vegetarian diet consisting of algae wafers, spirulina, and vegetables such as zucchini and cucumber. Small amounts of meaty foods can be offered occasionally.
Are these fish suitable for a community tank?
Yes, they are generally compatible with most community fish. However, males may become territorial in small tanks, so adequate space is recommended.
Carol Blake –
The Ancistrus demasceni are very peaceful and add a unique look to my tank. I feed them algae wafers and zucchini daily. They seem to enjoy the vegetables and stay active without bothering other fish.
Stephen Churchill –
I’ve had these fish for three months now. The tentacles on the males are quite striking. They don’t eat much but seem content with spirulina and cucumber slices. I keep them in a 20-gallon tank with tetras and corydoras.
Steven Springer –
Great addition to a planted tank. They don’t compete for food and stay calm even with other fish. I feed them once a day with a mix of algae wafers and boiled zucchini.