Striped Headstander

Striped Headstander

Anostomus anostomus

Intermediate Freshwater Territorial fish that swims characteristically head‑down. May be aggressive toward conspecifics and similar fish. Best kept alone or in large groups (5+). Anostomidae
Max Size 15.0 cm (5.9")
Min Tank 200 L (53 gal)
Min Group 1+
Diet Herbivore/Omnivore. Primarily plant-based diet: algae, cooked vegetables, spirulina-based flakes. Also accepts brine shrimp and protein foods occasionally.

Water Parameters

Temperature
22.0-28.0°C
72-82°F
pH
5.5-7.5
Hardness (dGH)
5.0-15.0
Min Tank Size
200 L
53 gal

About

Anostomus is known for its characteristic head‑down swimming posture (headstander). Its striped body in gold, black, and red, with an upward‑facing mouth adapted for scraping algae, is unmistakable. A fascinating but demanding species in terms of compatibility.

Behavior & Temperament

Territorial fish that swims characteristically head‑down. May be aggressive toward conspecifics and similar fish. Best kept alone or in large groups (5+).

Feeding

Herbivore/Omnivore. Primarily plant-based diet: algae, cooked vegetables, spirulina-based flakes. Also accepts brine shrimp and protein foods occasionally.

Breeding

Oviparous. Reproduction is rare in captivity. Poorly documented in home aquariums.

Care Notes

Tank with plenty of hiding spots and driftwood. Use hardy plants (delicate ones will be nibbled). Provide a vegetable‑rich diet. Keep singly or in groups of five or more to diffuse aggression.

Compatibility

Compatible with similarly sized, non‑aggressive fish. Avoid other headstanders in the same aquarium unless kept in a large group. Not suitable with very small fish.

Quick Summary

Scientific NameAnostomus anostomus
FamilyAnostomidae
CategoryFish
Care LevelIntermediate
Water TypeFreshwater
Max Size15.0 cm (5.9")
Min Tank200 L (53 gal)
Min Group1+
DietHerbivore/Omnivore. Primarily plant-based diet: algae, cooked vegetables, spirulina-based flakes. Also accepts brine shrimp and protein foods occasionally.
TemperamentTerritorial fish that swims characteristically head‑down. May be aggressive toward conspecifics and similar fish. Best kept alone or in large groups (5+).

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