Can rams live with black neon tetras?

Verdict
Yes, with care

Yes, with care. Rams and black neon tetras can share a tank, but watch one thing. They only share 80–81°F. Keep the heater set there and steady.

German blue ramGerman blue ram80–86°F · pH 5–7 Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 80–81°German blue ram 80–86°Black neon tetra 73–81°
The green band is the temperature range both can live in.
456789Both: 5.5–7German blue ram 5–7Black neon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

German blue ram · 2.5 inBlack neon tetra · 1.5 in0"1"2"3"4"5"6"
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

German blue ramBlack neon tetra
Temperature80–86 °F73–81 °F
pH5–75.5–7.5
Adult size2.5 in1.5 in
Minimum tank20 gal15 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for rams

All german blue ram tank mates

Better tank mates for black neon tetras

All black neon tetra tank mates

Questions

Can rams live with black neon tetras?

Yes, with care. Rams and black neon tetras can share a tank, but watch one thing. They only share 80–81°F. Keep the heater set there and steady.

What temperature suits both rams and black neon tetras?

80–81 °F. Rams need 80–86 °F, black neon tetras need 73–81 °F.

What size tank do rams and black neon tetras need together?

At least 20 gal, set by the german blue ram. Add space for each extra fish.