Amazon leaffish vs Glass knifefish: can they live together?

Verdict: Not recommended

  • The Glass knifefish is best kept in a species tank.
  • The Glass knifefish is aggressive towards other fish.
  • The Amazon leaffish is best kept in a species tank.
  • The Amazon leaffish can be semi-aggressive or nip fins.
  • An adult Glass knifefish is about 4 times the length of a Amazon leaffish and may eat it.
  • Both are comfortable at 23–26°C (73–79°F).
  • A pH of 6.0–6.5 suits both.

Side by side

Amazon leaffishGlass knifefish
Adult size10 cm (3.9 in)35 cm (14 in)
Minimum tank75 L (20 US gal)210 L (55 US gal)
Temperature22–26°C (72–79°F)23–28°C (73–82°F)
pH6.0–6.56.0–7.5
Hardness5–8 dGH (89–143 ppm)2–15 dGH (36–268 ppm)
TemperamentSemi-aggressiveAggressive
Community tankNot suitableNot suitable
Care levelDifficultDifficult
DietCarnivoreCarnivore

Species profiles