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Striped Headstander
Anostomus anostomus
📍 South America
The Striped Headstander is a striking, torpedo-shaped characin from South America known for its bold horizontal black and gold stripes and its distinctive head-down swimming posture. It is a hardy and active fish that makes a visually impressive addition to larger community aquariums. However, its semi-aggressive nature and tendency to nip fins means tankmate selection requires careful consideration.
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Care Guide
Diet
The Striped Headstander is primarily herbivorous and should be fed a diet rich in plant-based foods such as blanched spinach, zucchini, spirulina wafers, and algae-based flake or pellet foods. It will also accept small meaty foods like bloodworms or brine shrimp as occasional treats. Feed 2-3 times daily in small amounts, and be aware it will graze on soft-leaved aquarium plants.
Behavior
This species adopts a characteristic head-down angle when swimming and foraging, which is a normal and fascinating behavior to observe. It is an active, fast-moving fish that can be territorial and nippy toward similarly shaped or slower-moving tankmates, particularly those with long fins. It is best kept singly or in groups of 5 or more to distribute aggression, and it appreciates a well-decorated tank with driftwood, rocks, and robust plants.
Breeding
Breeding the Striped Headstander in captivity is extremely rare and has seldom been achieved in home aquariums. They are egg scatterers in the wild, spawning during seasonal flooding events in large river systems. Replicating these conditions, including significant water volume changes and specific temperature and pH triggers, would be required for any breeding attempt.
Tank Mates
Similar body shape may trigger territorial disputes; keep in large tanks with plenty of space
Fast-moving tetra that can hold its own and occupies similar water conditions
Robust, similarly sized South American fish that is not easily bullied
Sturdy cichlid from similar habitat; can coexist if tank is large enough
Bottom-dwelling algae eater that occupies a different zone and is not threatened
Long fins may attract nipping; best in very large tanks with ample hiding spots
Common Diseases
Ich (White Spot Disease)
Small white spots resembling grains of salt covering the body and fins, flashing against objects, lethargy
Raise water temperature gradually to 28-30°C and treat with an ich-specific medication such as copper-based treatments or malachite green; perform regular water changes
Fin Rot
Fraying, discoloration, or deterioration of fins, often with a white or red edge
Improve water quality with frequent water changes, remove any aggressive tankmates, and treat with antibacterial medication such as kanamycin or erythromycin
Hole-in-the-Head Disease (HITH)
Pitting or erosion of the skin around the head and lateral line, loss of appetite, lethargy
Improve diet with varied nutrition and vitamin supplements, perform large water changes, and treat with metronidazole if bacterial infection is suspected
Velvet (Oodinium)
Fine gold or rust-colored dust on the skin, rapid gill movement, flashing, lethargy
Dim tank lighting, treat with copper-based medication or acriflavine, and raise temperature slightly; quarantine affected fish
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Quick Facts
- diet
- Herbivore/omnivore – algae, plant matter, vegetables, and some meaty foods
- lifespan
- 5-10 years
- max size
- 18 cm (7 in)
- tank size
- 55 gallons minimum
- temperament
- semi-aggressive
Water it likes
- ph
- 5.5-7.5
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 2-15 dGH
- temperature
- 72–82°F (22–28°C)