Can nerite snails live with black ghost knives?

Verdict
Yes, with care

Yes, with care. Nerite snails and black ghost knives can share a tank, but watch one thing. Large black ghost knives crack or pick at small snails. A big mystery snail has better odds than a ramshorn.

Nerite snailNerite snail72–78°F · pH 7–8.5 Black ghost knifeBlack ghost knife73–82°F · pH 6–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–78°Nerite snail 72–78°Black ghost knife 73–82°
The green band is the temperature range both can live in.
456789Both: 7–8Nerite snail 7–8.5Black ghost knife 6–8
The green band is the pH both tolerate.

Size to scale

Nerite snail · 1 inBlack ghost knife · 15 in0"2"4"6"8"10"12"14"
Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

Nerite snailBlack ghost knife
Temperature72–78 °F73–82 °F
pH7–8.56–8
Adult size1.0 in15.0 in
Minimum tank5 gal125 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomBottom
GroupAlone or in pairsOne per tank
DietHerbivoreCarnivore

Better tank mates for nerite snails

All nerite snail tank mates

Better tank mates for black ghost knives

All black ghost knife tank mates

Questions

Can nerite snails live with black ghost knives?

Yes, with care. Nerite snails and black ghost knives can share a tank, but watch one thing. Large black ghost knives crack or pick at small snails. A big mystery snail has better odds than a ramshorn.

What temperature suits both nerite snails and black ghost knives?

73–78 °F. Nerite snails need 72–78 °F, black ghost knives need 73–82 °F.

What size tank do nerite snails and black ghost knives need together?

At least 125 gal, set by the black ghost knife. Add space for each extra fish.