Guppy Grass (Najas guadalupensis)
Fast-growing, flexible and excellent for fry and shrimp, Guppy Grass is a classic low-tech aquarium plant that can be planted or left floating. Najas guadalupensis forms a loose, branching mass of fine green foliage that creates instant shelter while helping consume excess nutrients.
Quick Facts
- Plant type: Stem plant
- Sale format: Clump
- Placement: Plant individual stems with space between them, or float only when appropriate for the species.
- Lighting: Species-dependent; colour forms and compact growth often need stronger, stable light.
- Injected CO₂: Species-dependent; injected CO₂ often helps with growth and density.
| Feature | Detail |
|---|---|
| Plant Type | Stem plant |
| Form | Clump |
| Best Use | Shelter for fry and shrimp, nutrient absorption |
| Light Requirement | Species-dependent; stronger light preferred for compact growth |
FAQ
Can Guppy Grass be left floating in the aquarium?
Yes, Guppy Grass can be left floating. It works well in tanks where space is limited or when providing cover for small fish and shrimp.
Does Guppy Grass require CO₂ injection?
Guppy Grass can grow without CO₂, but injected CO₂ often supports faster growth and denser foliage.
How should I place the Guppy Grass clump in my tank?
Plant individual stems with adequate spacing. Alternatively, leave them floating depending on the species in your aquarium.
Gavin Langdon –
Guppy Grass grew quickly and provided excellent cover for my neon tetras and shrimp. I planted it in a low-light tank and it still thrived. The fine leaves made a great hiding spot for fry.
Fiona Berry –
Easy to grow and very effective at reducing algae. I left some stems floating and they worked well for my shrimp. A good addition to any community tank.
Gavin Quinn –
Perfect for beginners. The plant spreads naturally and doesn’t need much maintenance. I used it in a 20-gallon tank with fry and it made a big difference in their safety.