Glass Knifefish
Eigenmannia virescens
Glass Knifefish is a peaceful bottom-dwelling fish.
Save this fish or add it directly to one of your aquariums.
Quick facts
- Adult size
- ≤ 45 cm (≤ 17.7 in)
- Aquarium size
- 284 L or larger
- Care level
- Intermediate
- Temperament
- Peaceful
- Swimming zone
- Bottom dweller
- Temperature
- 20–30 °C
- pH
- 6–7
- GH
- 2–15 dGH
- Diet
- Omnivore
- Lifespan
- up to 6 years
Care requirements
Care level: Intermediate.
Lifespan: up to 6 years.
Aquarium size and space needs
Minimum aquarium size: 284 L or larger. Plan the layout and stocking within that limit.
Water parameters
Suitable water: temperature 20–30 °C, pH 6–7, GH 2–15 dGH.
Temperament and compatibility
Glass Knifefish is peaceful and suits calm community fish.
Swimming zone and behavior
This fish uses the bottom area, so leave enough open substrate area for movement and feeding.
Feeding
As an omnivore, Glass Knifefish should receive a varied diet rather than one repeated food type.
Make sure food reaches the substrate before faster fish take it.
Before adding this fish
- Plan for an aquarium of 284 L or larger.
- Avoid aggressive or highly competitive fish.
- Offer a varied diet suitable for an omnivorous bottom-dwelling fish.
Similar fish profiles
Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.
FAQ
How large does Glass Knifefish get?
Glass Knifefish reaches ≤ 45 cm (≤ 17.7 in). It needs specialist housing, long-term space, strong filtration, and carefully chosen companions.
What aquarium size does Glass Knifefish need?
Use an aquarium of at least 284 L or larger.
Is Glass Knifefish peaceful?
Yes. Glass Knifefish is recorded as peaceful and is best planned with calm community fish that do not harass it or dominate the feeding area.
What temperature is suitable for Glass Knifefish?
Keep it between 20 to 30 °C.